Estimated historical SPY fund units equal dated official portfolio value divided by retained quarter-end market price; current sponsor-reported units remain the latest control value.
Available history 2017 to 2026-Q2
Data captured 2026-08-30T00:00:00.000Z Historical Shares Outstanding Date Estimated fund units outstanding 2026-Q2 1,045,883,839.84 2026-Q1 1,001,452,944.08 2025-Q4 1,044,150,433.62 2025-Q3 1,009,724,203.28 2025-Q2 1,030,475,126.95 2025-Q1 1,029,404,484.14 2024-Q4 1,064,113,129.08 2024-Q3 1,030,792,973.21 2024-Q2 993,680,692.08 2024-Q1 1,024,679,113.12 2023-Q4 1,045,571,522.59 2023-Q3 937,814,126.47 2023-Q2 953,457,449 2023-Q1 915,199,061.69 2022-Q4 932,423,896.36 2022-Q3 912,971,527.89 2022-Q2 918,056,350.62 2022-Q1 923,083,516.71 2021-Q4 958,639,022.68 2021-Q3 900,181,862.87 2021-Q2 873,723,142.6 2021-Q1 870,402,191.26 2020-Q4 880,199,621.88 2020-Q3 881,928,449.55 2020-Q2 889,962,547.65 2020-Q1 919,123,742.08 2019-Q4 955,218,068.62 2019-Q3 921,725,173.99 2019-Q2 933,584,879.72 2019-Q1 968,353,013.03 2018-Q4 1,116,700,695.66 2018-Q3 959,981,544.59 2018-Q2 1,028,774,097.14 2018-Q1 1,060,558,017.44 2017-Q4 910,279,012.42 2017-Q3 966,910,990.14 2017-Q2 1,004,619,689.23 2017-Q1 1,030,444,719.86
Annual Shares Outstanding Date Estimated fund units outstanding 2026 1,092,903,382.1 2025 986,417,877.76 2024 1,009,124,640.2 2023 843,442,795.54 2022 852,692,440.16 2021 813,340,207.11 2020 789,956,744.23 2019 849,873,802.92 2018 1,116,700,695.66 2017 910,279,012.42