IGE additions & removals
Changes are observation-bounded: an addition is the first retained official snapshot containing a security after an earlier absence; a removal is its first retained absence. Baseline holdings receive no invented addition date.
Additions
| Ticker | Issuer | Observed date | Change |
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| SSR Mining, Inc. | SSR Mining, Inc. | 2025-12-31 | Added / first present |
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| Materion Corp. | Materion Corp. | 2025-12-31 | Added / first present |
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| ERO Copper Corp. | ERO Copper Corp. | 2025-12-31 | Added / first present |
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| Century Aluminum Co. | Century Aluminum Co. | 2025-12-31 | Added / first present |
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| Seabridge Gold, Inc. | Seabridge Gold, Inc. | 2025-12-31 | Added / first present |
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| Centrus Energy Corp. | Centrus Energy Corp. | 2025-12-31 | Added / first present |
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| Energy Fuels, Inc. | Energy Fuels, Inc. | 2025-12-31 | Added / first present |
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| Centerra Gold, Inc. | Centerra Gold, Inc. | 2025-12-31 | Added / first present |
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| Endeavour Silver Corp. | Endeavour Silver Corp. | 2025-12-31 | Added / first present |
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| Perpetua Resources Corp. | Perpetua Resources Corp. | 2025-12-31 | Added / first present |
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| Aris Mining Corp. | Aris Mining Corp. | 2025-12-31 | Added / first present |
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| Fortuna Mining Corp. | Fortuna Mining Corp. | 2025-12-31 | Added / first present |
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| Venture Global, Inc. | Venture Global, Inc. | 2025-12-31 | Added / first present |
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| Viper Energy, Inc. | Viper Energy, Inc. | 2025-09-30 | Added / first present |
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| New Gold, Inc. | New Gold, Inc. | 2025-06-30 | Added / first present |
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| Sandstorm Gold Ltd. | Sandstorm Gold Ltd. | 2025-06-30 | Added / first present |
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| Orla Mining Ltd. | Orla Mining Ltd. | 2025-06-30 | Added / first present |
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| Sable Offshore Corp. | Sable Offshore Corp. | 2025-06-30 | Added / first present |
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| Barrick Mining Corp. | Barrick Mining Corp. | 2025-06-30 | Added / first present |
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| OR Royalties, Inc. | OR Royalties, Inc. | 2025-06-30 | Added / first present |
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| Core Natural Resources, Inc. | Core Natural Resources, Inc. | 2025-03-31 | Added / first present |
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| Coeur Mining, Inc. | Coeur Mining, Inc. | 2024-12-31 | Added / first present |
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| Oceaneering International, Inc. | Oceaneering International, Inc. | 2024-12-31 | Added / first present |
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| United States Lime & Minerals, Inc. | United States Lime & Minerals, Inc. | 2024-12-31 | Added / first present |
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| IAMGOLD Corp. | IAMGOLD Corp. | 2024-12-31 | Added / first present |
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| Equinox Gold Corp. | Equinox Gold Corp. | 2024-12-31 | Added / first present |
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| Kinetik Holdings, Inc. | Kinetik Holdings, Inc. | 2024-12-31 | Added / first present |
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| Crescent Energy, Inc. | Crescent Energy, Inc. | 2024-12-31 | Added / first present |
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| Triple Flag Precious Metals Corp. | Triple Flag Precious Metals Corp. | 2024-12-31 | Added / first present |
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| South Bow Corp. | South Bow Corp. | 2024-12-31 | Added / first present |
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| Archrock, Inc. | Archrock, Inc. | 2024-06-30 | Added / first present |
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| Hudbay Minerals, Inc. | Hudbay Minerals, Inc. | 2024-06-30 | Added / first present |
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| Sylvamo Corp. | Sylvamo Corp. | 2024-06-30 | Added / first present |
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| Kodiak Gas Services, Inc. | Kodiak Gas Services, Inc. | 2024-06-30 | Added / first present |
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| Atlas Energy Solutions, Inc. | Atlas Energy Solutions, Inc. | 2024-06-30 | Added / first present |
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| Viper Energy, Inc. | Viper Energy, Inc. | 2024-06-30 | Added / first present |
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| Veren, Inc. | Veren, Inc. | 2024-06-30 | Added / first present |
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| Tidewater, Inc. | Tidewater, Inc. | 2023-12-31 | Added / first present |
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| Eldorado Gold Corp. | Eldorado Gold Corp. | 2023-12-31 | Added / first present |
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| Uranium Energy Corp. | Uranium Energy Corp. | 2023-12-31 | Added / first present |
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| Baytex Energy Corp. | Baytex Energy Corp. | 2023-12-31 | Added / first present |
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| NexGen Energy Ltd. | NexGen Energy Ltd. | 2023-12-31 | Added / first present |
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| Gulfport Energy Corp. | Gulfport Energy Corp. | 2023-12-31 | Added / first present |
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| Knife River Corp. | Knife River Corp. | 2023-12-31 | Added / first present |
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| Osisko Gold Royalties Ltd. | Osisko Gold Royalties Ltd. | 2023-06-30 | Added / first present |
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| CONSOL Energy, Inc. | CONSOL Energy, Inc. | 2022-12-31 | Added / first present |
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| Arch Resources, Inc. | Arch Resources, Inc. | 2022-12-31 | Added / first present |
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| Permian Resources Corp. | Permian Resources Corp. | 2022-12-31 | Added / first present |
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| N/A | N/A | 2022-09-30 | Added / first present |
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| PBF Energy Inc | PBF Energy Inc | 2022-06-30 | Added / first present |
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| Patterson-UTI Energy Inc | Patterson-UTI Energy Inc | 2022-06-30 | Added / first present |
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| Peabody Energy Corp | Peabody Energy Corp | 2022-06-30 | Added / first present |
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| Vermilion Energy Inc | Vermilion Energy Inc | 2022-06-30 | Added / first present |
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| Kosmos Energy Ltd | Kosmos Energy Ltd | 2022-06-30 | Added / first present |
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| Cactus Inc | Cactus Inc | 2022-06-30 | Added / first present |
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| NexTier Oilfield Solutions Inc | NexTier Oilfield Solutions Inc | 2022-06-30 | Added / first present |
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| Comstock Resources Inc | Comstock Resources Inc | 2022-06-30 | Added / first present |
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| Callon Petroleum Co | Callon Petroleum Co | 2022-06-30 | Added / first present |
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| Northern Oil and Gas Inc | Northern Oil and Gas Inc | 2022-06-30 | Added / first present |
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| Oasis Petroleum Inc | Oasis Petroleum Inc | 2022-06-30 | Added / first present |
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| Enviva Inc | Enviva Inc | 2022-06-30 | Added / first present |
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| Schlumberger NV | Schlumberger NV | 2022-03-31 | Added / first present |
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| HIPPO PARENT CORP | HIPPO PARENT CORP | 2022-03-31 | Added / first present |
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| Crescent Point Energy Corp | Crescent Point Energy Corp | 2021-12-31 | Added / first present |
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| Magnolia Oil & Gas Corp | Magnolia Oil & Gas Corp | 2021-12-31 | Added / first present |
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| SM Energy Co | SM Energy Co | 2021-12-31 | Added / first present |
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| Pretium Resources Inc | Pretium Resources Inc | 2021-12-31 | Added / first present |
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| Enerplus Corp | Enerplus Corp | 2021-12-31 | Added / first present |
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| Lithium Americas Corp | Lithium Americas Corp | 2021-12-31 | Added / first present |
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| Ranpak Holdings Corp | Ranpak Holdings Corp | 2021-12-31 | Added / first present |
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| Whiting Petroleum Corp | Whiting Petroleum Corp | 2021-12-31 | Added / first present |
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| California Resources Corp | California Resources Corp | 2021-12-31 | Added / first present |
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| Chesapeake Energy Corp | Chesapeake Energy Corp | 2021-12-31 | Added / first present |
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| DT Midstream Inc | DT Midstream Inc | 2021-12-31 | Added / first present |
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| Civitas Resources Inc | Civitas Resources Inc | 2021-12-31 | Added / first present |
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| Southwestern Energy Co | Southwestern Energy Co | 2021-06-30 | Added / first present |
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| Range Resources Corp | Range Resources Corp | 2021-06-30 | Added / first present |
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| Antero Resources Corp | Antero Resources Corp | 2021-06-30 | Added / first present |
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| West Fraser Timber Co Ltd | West Fraser Timber Co Ltd | 2021-06-30 | Added / first present |
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| Coeur Mining Inc | Coeur Mining Inc | 2021-06-30 | Added / first present |
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| Matador Resources Co | Matador Resources Co | 2021-06-30 | Added / first present |
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| Domtar Corp | Domtar Corp | 2021-06-30 | Added / first present |
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| Liberty Oilfield Services Inc | Liberty Oilfield Services Inc | 2021-06-30 | Added / first present |
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| Renewable Energy Group Inc | Renewable Energy Group Inc | 2021-06-30 | Added / first present |
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| First Majestic Silver Corp | First Majestic Silver Corp | 2021-06-30 | Added / first present |
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| O-I Glass Inc | O-I Glass Inc | 2021-06-30 | Added / first present |
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| New Fortress Energy Inc | New Fortress Energy Inc | 2021-06-30 | Added / first present |
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| Denbury Inc | Denbury Inc | 2021-06-30 | Added / first present |
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| Turquoise Hill Resources Ltd | Turquoise Hill Resources Ltd | 2021-06-30 | Added / first present |
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| Pactiv Evergreen Inc | Pactiv Evergreen Inc | 2021-06-30 | Added / first present |
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| Texas Pacific Land Corp | Texas Pacific Land Corp | 2021-06-30 | Added / first present |
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| MP Materials Corp | MP Materials Corp | 2021-06-30 | Added / first present |
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| NOV Inc | NOV Inc | 2021-03-31 | Added / first present |
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| APA Corp | APA Corp | 2021-03-31 | Added / first present |
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| Antero Midstream Corp | Antero Midstream Corp | 2020-12-31 | Added / first present |
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| SSR Mining Inc | SSR Mining Inc | 2020-12-31 | Added / first present |
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| Hecla Mining Co | Hecla Mining Co | 2020-12-31 | Added / first present |
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| Ovintiv Inc | Ovintiv Inc | 2020-12-31 | Added / first present |
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| Arconic Corp | Arconic Corp | 2020-12-31 | Added / first present |
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| Equinox Gold Corp | Equinox Gold Corp | 2020-12-31 | Added / first present |
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| Novagold Resources Inc | Novagold Resources Inc | 2020-06-30 | Added / first present |
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| Alamos Gold Inc | Alamos Gold Inc | 2020-06-30 | Added / first present |
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| ChampionX Corp | ChampionX Corp | 2020-06-30 | Added / first present |
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| Ovintiv Inc | Ovintiv Inc | 2020-03-31 | Added / first present |
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| O-I Glass Inc | O-I Glass Inc | 2019-12-31 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
|---|
| New Gold, Inc. | New Gold, Inc. | 2026-03-31 | Removed / first absent |
|---|
| Sandstorm Gold Ltd. | Sandstorm Gold Ltd. | 2025-12-31 | Removed / first absent |
|---|
| Sable Offshore Corp. | Sable Offshore Corp. | 2025-12-31 | Removed / first absent |
|---|
| Atlas Energy Solutions, Inc. | Atlas Energy Solutions, Inc. | 2025-12-31 | Removed / first absent |
|---|
| Viper Energy, Inc. | Viper Energy, Inc. | 2025-09-30 | Removed / first absent |
|---|
| Veren, Inc. | Veren, Inc. | 2025-06-30 | Removed / first absent |
|---|
| Osisko Gold Royalties Ltd. | Osisko Gold Royalties Ltd. | 2025-06-30 | Removed / first absent |
|---|
| CONSOL Energy, Inc. | CONSOL Energy, Inc. | 2025-03-31 | Removed / first absent |
|---|
| Arch Resources, Inc. | Arch Resources, Inc. | 2023-12-31 | Removed / first absent |
|---|
| Vermilion Energy Inc | Vermilion Energy Inc | 2025-06-30 | Removed / first absent |
|---|
| Kosmos Energy Ltd | Kosmos Energy Ltd | 2025-06-30 | Removed / first absent |
|---|
| NexTier Oilfield Solutions Inc | NexTier Oilfield Solutions Inc | 2023-09-30 | Removed / first absent |
|---|
| Callon Petroleum Co | Callon Petroleum Co | 2024-06-30 | Removed / first absent |
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| Enviva Inc | Enviva Inc | 2023-06-30 | Removed / first absent |
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| Crescent Point Energy Corp | Crescent Point Energy Corp | 2024-06-30 | Removed / first absent |
|---|
| Pretium Resources Inc | Pretium Resources Inc | 2022-03-31 | Removed / first absent |
|---|
| Enerplus Corp | Enerplus Corp | 2024-06-30 | Removed / first absent |
|---|
| Lithium Americas Corp | Lithium Americas Corp | 2023-12-31 | Removed / first absent |
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| Ranpak Holdings Corp | Ranpak Holdings Corp | 2022-06-30 | Removed / first absent |
|---|
| Whiting Petroleum Corp | Whiting Petroleum Corp | 2022-09-30 | Removed / first absent |
|---|
| Civitas Resources Inc | Civitas Resources Inc | 2026-03-31 | Removed / first absent |
|---|
| Southwestern Energy Co | Southwestern Energy Co | 2024-12-31 | Removed / first absent |
|---|
| Coeur Mining Inc | Coeur Mining Inc | 2022-06-30 | Removed / first absent |
|---|
| Domtar Corp | Domtar Corp | 2021-12-31 | Removed / first absent |
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| Renewable Energy Group Inc | Renewable Energy Group Inc | 2022-06-30 | Removed / first absent |
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| New Fortress Energy Inc | New Fortress Energy Inc | 2025-06-30 | Removed / first absent |
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| Denbury Inc | Denbury Inc | 2023-12-31 | Removed / first absent |
|---|
| Turquoise Hill Resources Ltd | Turquoise Hill Resources Ltd | 2022-12-31 | Removed / first absent |
|---|
| Pactiv Evergreen Inc | Pactiv Evergreen Inc | 2025-06-30 | Removed / first absent |
|---|
| SSR Mining Inc | SSR Mining Inc | 2024-06-30 | Removed / first absent |
|---|
| Arconic Corp | Arconic Corp | 2023-09-30 | Removed / first absent |
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| Equinox Gold Corp | Equinox Gold Corp | 2022-12-31 | Removed / first absent |
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| ChampionX Corp | ChampionX Corp | 2025-09-30 | Removed / first absent |
|---|
| Ovintiv Inc | Ovintiv Inc | 2020-06-30 | Removed / first absent |
|---|
| O-I Glass Inc | O-I Glass Inc | 2020-06-30 | Removed / first absent |
|---|
| Chicago Mercantile Exchange | Chicago Mercantile Exchange | 2022-09-30 | Removed / first absent |
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| Schlumberger Ltd | Schlumberger Ltd | 2019-12-31 | Removed / first absent |
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| National Oilwell Varco Inc | National Oilwell Varco Inc | 2021-03-31 | Removed / first absent |
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| Southwestern Energy Co | Southwestern Energy Co | 2019-12-31 | Removed / first absent |
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| HollyFrontier Corp | HollyFrontier Corp | 2022-03-31 | Removed / first absent |
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| Hess Corp | Hess Corp | 2025-09-30 | Removed / first absent |
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| Pioneer Natural Resources Co | Pioneer Natural Resources Co | 2024-06-30 | Removed / first absent |
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| WestRock Co | WestRock Co | 2024-09-30 | Removed / first absent |
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| Concho Resources Inc | Concho Resources Inc | 2021-03-31 | Removed / first absent |
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| Marathon Oil Corp | Marathon Oil Corp | 2024-12-31 | Removed / first absent |
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| Noble Energy Inc | Noble Energy Inc | 2020-12-31 | Removed / first absent |
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| Apache Corp | Apache Corp | 2021-03-31 | Removed / first absent |
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| Barrick Gold Corp | Barrick Gold Corp | 2025-06-30 | Removed / first absent |
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| Cimarex Energy Co | Cimarex Energy Co | 2021-12-31 | Removed / first absent |
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| Parsley Energy Inc | Parsley Energy Inc | 2021-03-31 | Removed / first absent |
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| WPX Energy Inc | WPX Energy Inc | 2021-03-31 | Removed / first absent |
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| PBF Energy Inc | PBF Energy Inc | 2020-12-31 | Removed / first absent |
|---|
| Equitrans Midstream Corp | Equitrans Midstream Corp | 2024-09-30 | Removed / first absent |
|---|
| Patterson-UTI Energy Inc | Patterson-UTI Energy Inc | 2020-06-30 | Removed / first absent |
|---|
| Continental Resources Inc/OK | Continental Resources Inc/OK | 2022-12-31 | Removed / first absent |
|---|
| Chesapeake Energy Corp | Chesapeake Energy Corp | 2019-12-31 | Removed / first absent |
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| Range Resources Corp | Range Resources Corp | 2019-12-31 | Removed / first absent |
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| Antero Resources Corp | Antero Resources Corp | 2019-12-31 | Removed / first absent |
|---|
| Centennial Resource Development Inc/DE | Centennial Resource Development Inc/DE | 2019-12-31 | Removed / first absent |
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| Peabody Energy Corp | Peabody Energy Corp | 2019-12-31 | Removed / first absent |
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| Kirkland Lake Gold Ltd | Kirkland Lake Gold Ltd | 2022-03-31 | Removed / first absent |
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| Encana Corp | Encana Corp | 2020-03-31 | Removed / first absent |
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| Vermilion Energy Inc | Vermilion Energy Inc | 2020-06-30 | Removed / first absent |
|---|
| Crescent Point Energy Corp | Crescent Point Energy Corp | 2020-06-30 | Removed / first absent |
|---|
| Kosmos Energy Ltd | Kosmos Energy Ltd | 2020-06-30 | Removed / first absent |
|---|
| Compass Minerals International | Compass Minerals International | 2023-12-31 | Removed / first absent |
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| Delek US Holdings Inc | Delek US Holdings Inc | 2020-12-31 | Removed / first absent |
|---|
| Apergy Corp | Apergy Corp | 2020-06-30 | Removed / first absent |
|---|
| Matador Resources Co | Matador Resources Co | 2020-06-30 | Removed / first absent |
|---|
| Dril-Quip Inc | Dril-Quip Inc | 2020-06-30 | Removed / first absent |
|---|
| Oceaneering International Inc | Oceaneering International Inc | 2020-06-30 | Removed / first absent |
|---|
| PDC Energy Inc | PDC Energy Inc | 2023-09-30 | Removed / first absent |
|---|
| Callon Petroleum Co | Callon Petroleum Co | 2019-12-31 | Removed / first absent |
|---|
| SM Energy Co | SM Energy Co | 2019-12-31 | Removed / first absent |
|---|
| QEP Resources Inc | QEP Resources Inc | 2019-12-31 | Removed / first absent |
|---|
| Oasis Petroleum Inc | Oasis Petroleum Inc | 2019-12-31 | Removed / first absent |
|---|
| Whiting Petroleum Corp | Whiting Petroleum Corp | 2019-12-31 | Removed / first absent |
|---|
| Turquoise Hill Resources Ltd | Turquoise Hill Resources Ltd | 2019-12-31 | Removed / first absent |
|---|
| Domtar Corp | Domtar Corp | 2020-06-30 | Removed / first absent |
|---|
| Norbord Inc | Norbord Inc | 2021-03-31 | Removed / first absent |
|---|
| Berry Global Group Inc | Berry Global Group Inc | 2025-06-30 | Removed / first absent |
|---|
| Owens-Illinois Inc | Owens-Illinois Inc | 2019-12-31 | Removed / first absent |
|---|
| Jagged Peak Energy Inc | Jagged Peak Energy Inc | 2020-03-31 | Removed / first absent |
|---|
| RPC Inc | RPC Inc | 2019-12-31 | Removed / first absent |
|---|
| Summit Materials Inc | Summit Materials Inc | 2025-03-31 | Removed / first absent |
|---|
| Tellurian Inc | Tellurian Inc | 2020-06-30 | Removed / first absent |
|---|
| Yamana Gold Inc | Yamana Gold Inc | 2023-06-30 | Removed / first absent |
|---|
| Enerplus Corp | Enerplus Corp | 2020-06-30 | Removed / first absent |
|---|