NASDAQ:UPB | Historical Stock Price | Upstream Bio, Inc.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2024-10-11 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$5.62$8.07$11.58$16.62$23.85$34.232024-10-112026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

View year

Historical Stock Price — 2024

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2024-12-31$16.44$16.44286,300
2024-12-30$17.12$17.12232,500
2024-12-27$19.19$19.19161,500
2024-12-26$19.45$19.45137,300
2024-12-24$19.40$19.40162,800
2024-12-23$17.93$17.93229,800
2024-12-20$16.21$16.213,884,000
2024-12-19$16.61$16.61477,700
2024-12-18$16.11$16.11490,400
2024-12-17$19.63$19.63521,500
2024-12-16$19.01$19.01598,700
2024-12-13$20.25$20.25285,400
2024-12-12$20.41$20.41269,900
2024-12-11$21.52$21.52176,700
2024-12-10$21.14$21.14295,800
2024-12-09$22.20$22.20306,800
2024-12-06$23.84$23.84283,300
2024-12-05$22.00$22.00166,700
2024-12-04$22.82$22.82213,500
2024-12-03$21.99$21.99220,600
2024-12-02$21.63$21.63156,100
2024-11-29$21.87$21.8798,000
2024-11-27$21.26$21.26176,900
2024-11-26$18.96$18.96224,800
2024-11-25$18.69$18.69180,100
2024-11-22$18.19$18.19219,500
2024-11-21$17.80$17.80292,600
2024-11-20$18.01$18.01455,700
2024-11-19$22.74$22.74335,100
2024-11-18$23.77$23.77273,600
2024-11-15$25.46$25.46218,400
2024-11-14$25.94$25.94162,800
2024-11-13$25.91$25.91170,500
2024-11-12$26.38$26.38184,600
2024-11-11$26.80$26.80221,000
2024-11-08$26.18$26.18153,200
2024-11-07$27.02$27.02119,400
2024-11-06$26.57$26.57303,000
2024-11-05$27.39$27.39544,700
2024-11-04$25.15$25.15268,000
2024-11-01$24.76$24.76346,600
2024-10-31$24.80$24.80168,000
2024-10-30$24.90$24.90225,500
2024-10-29$25.16$25.16266,300
2024-10-28$24.23$24.23214,200
2024-10-25$25.06$25.06187,000
2024-10-24$25.06$25.06184,500
2024-10-23$25.00$25.00108,400
2024-10-22$25.05$25.05618,100
2024-10-21$25.90$25.90559,400
2024-10-18$25.88$25.88408,400
2024-10-17$23.60$23.60424,300
2024-10-16$23.63$23.63821,800
2024-10-15$23.00$23.00242,500
2024-10-14$23.38$23.38433,700
2024-10-11$22.00$22.003,576,200