STRO — SUTRO BIOPHARMA INC
As of Q2 2026, 27 SEC-registered investment managers reported holding STRO (SUTRO BIOPHARMA INC) in their latest 13F filings, with a combined reported value of $143.27M across 4.33M shares. That is +52.4% by share count (+1.49M shares) versus the previous quarter, while reported value moved +102.6%. Ownership is concentrated: the five largest holders account for 65.5% of reported value and the top ten for 86.3%.
Compared with the prior quarter, 8 opened new positions, 12 added to existing stakes, 6 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
STRO is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| BlackRock Inc history | Q2 2026 | 1.12M | $37.27M | 0.00% | Add |
| Balyasny Asset Management history | Q2 2026 | 711.16K | $23.61M | 0.03% | Add |
| Geode Capital Management history | Q2 2026 | 389.69K | $12.94M | 0.00% | Add |
| Millennium Management history | Q2 2026 | 365.97K | $12.15M | 0.01% | Add |
| Point72 Asset Management history | Q2 2026 | 237.83K | $7.90M | 0.01% | Reduce |
| UBS Group AG history | Q2 2026 | 208.51K | $6.92M | 0.00% | Reduce |
| Two Sigma Investments history | Q2 2026 | 201.69K | $6.70M | 0.01% | Add |
| Marshall Wace history | Q2 2026 | 175.25K | $5.82M | 0.01% | Reduce |
| JPMorgan Chase & Co history | Q2 2026 | 159.63K | $5.32M | 0.00% | New |
| Goldman Sachs Group history | Q2 2026 | 149.22K | $4.95M | 0.00% | Add |
| Vanguard Group history | Q4 2025 | 375.79K | $4.35M | 0.00% | Reduce |
| Northern Trust Corp history | Q2 2026 | 125.93K | $4.18M | 0.00% | Add |
| Citadel Advisors history | Q2 2026 | 101.97K | $3.39M | 0.00% | Reduce |
| Janus Henderson Group history | Q4 2021 | 220.04K | $3.28M | 0.00% | Add |
| Renaissance Technologies history | Q2 2026 | 86.32K | $2.87M | 0.00% | Reduce |
| Arrowstreet Capital history | Q3 2024 | 737.67K | $2.55M | 0.00% | Add |
| Invesco Ltd history | Q2 2026 | 57.30K | $1.90M | 0.00% | Add |
| MFS Investment Management history | Q3 2021 | 91.80K | $1.73M | 0.00% | New |
| Norges Bank Investment Management history | Q4 2022 | 206.20K | $1.67M | 0.00% | New |
| Charles Schwab Investment Management history | Q2 2026 | 49.30K | $1.64M | 0.00% | Add |
New Positions (Q2 2026)
- JPMorgan Chase & Co 159.63K sh · $5.32M
- BNY Mellon 41.37K sh · $1.37M
- D. E. Shaw & Co 30.13K sh · $1.00M
- Deutsche Bank AG 15.56K sh · $516.69K
- Wells Fargo & Co 13.54K sh · $449.66K
- Wellington Management Group 10.80K sh · $358.56K
- Legal & General Investment Management America 3.46K sh · $114.94K
- T. Rowe Price Associates 13.60K sh · $452
Fully Exited (vs previous quarter)
- AQR Capital Management sold 8.61K sh · $214.35K
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q3 2021 | Q4 2021 | Q1 2022 | Q2 2022 | Q3 2022 | Q4 2022 | Q1 2023 | Q2 2023 | Q3 2023 | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock Inc | — | — | — | — | — | — | — | — | — | — | — | — | 7.02M | 7.59M | 6.20M | 2.11M | 1.69M | 117.44K | 232.68K | 1.12M |
| Balyasny Asset Management | — | — | — | — | — | 17.61K | — | 214.02K | — | — | — | — | — | — | — | — | — | 230.05K | 465.79K | 711.16K |
| Geode Capital Management | 691.98K | 743.68K | 788.80K | 814.79K | 850.75K | 1.02M | 1.06M | 1.16M | 1.20M | 1.26M | 1.29M | 1.72M | 1.86M | 1.85M | 1.89M | 816.91K | 820.95K | 83.98K | 171.39K | 389.69K |
| Millennium Management | 214.58K | 145.63K | 342.13K | 2.41M | 2.54M | 1.37M | 891.62K | 1.50M | 1.24M | 1.54M | 4.74M | 4.36M | 2.03M | 405.62K | 703.15K | 4.73M | 4.52M | 418.20K | 210.38K | 365.97K |
| Point72 Asset Management | 375.00K | — | — | — | 711.00K | 790.60K | — | 209.00K | 533.15K | 285.70K | 260.70K | 4.45M | 3.00M | 2.20M | — | — | — | 179.09K | 692.11K | 237.83K |
| UBS Group AG | 1.22K | — | 110.33K | 3.72K | 1.07K | 72.66K | 82.70K | 30.06K | 35.97K | 59.59K | 64.64K | 31.35K | 165.86K | 183.66K | 75.57K | 1.62M | 1.85M | 7.87K | 392.87K | 208.51K |
| Two Sigma Investments | 227.48K | 113.08K | 162.91K | 182.90K | 177.09K | 237.90K | 340.41K | 135.82K | — | 323.19K | 485.76K | 503.60K | 491.76K | 316.29K | 95.88K | 115.07K | 396.79K | 46.49K | 65.18K | 201.69K |
| Marshall Wace | — | — | — | 574.24K | 523.62K | 559.91K | 217.91K | — | — | — | — | — | 30.66K | — | — | 234.43K | 118.44K | 85.61K | 222.63K | 175.25K |
| JPMorgan Chase & Co | 56.72K | 56.16K | 170.77K | 156.43K | 155.58K | 187.78K | 30.37K | 74.71K | 76.82K | 66.14K | 48.74K | 58.24K | 58.94K | 64.05K | 301.41K | 173.48K | 76.16K | 741 | — | 159.63K |
| Goldman Sachs Group | 326.16K | 362.55K | 402.38K | 506.06K | 940.57K | 1.08M | 1.50M | 1.10M | 1.09M | 1.06M | 802.74K | 1.05M | 1.75M | 1.71M | 1.71M | 405.75K | 88.11K | 15.67K | 27.19K | 149.22K |
| Northern Trust Corp | 536.02K | 545.22K | 391.02K | 376.98K | 406.77K | 460.56K | 454.91K | 483.07K | 485.82K | 481.18K | 486.38K | 502.65K | 622.43K | 636.92K | 633.92K | 167.73K | 122.11K | 14.38K | 33.17K | 125.93K |
| Citadel Advisors | 669.64K | 596.77K | 357.85K | 648.00K | 302.09K | 125.10K | 330.77K | 32.53K | 50.69K | 134.72K | 350.94K | 1.62M | 2.14M | 2.48M | 180.53K | 17.80K | — | 32.09K | 142.34K | 101.97K |
| Renaissance Technologies | — | 48.70K | — | 147.70K | 215.90K | 29.90K | 129.40K | 269.50K | 302.90K | 655.80K | 485.80K | 719.50K | 828.10K | 1.02M | 869.00K | 913.20K | 1.42M | 122.86K | 97.82K | 86.32K |
| Invesco Ltd | 345.24K | 166.22K | 54.13K | 61.32K | 59.30K | 62.74K | 19.44K | 21.78K | 21.39K | 30.62K | 26.20K | 26.26K | 25.13K | 38.75K | 92.14K | 103.32K | 134.92K | 16.97K | 17.16K | 57.30K |
| Charles Schwab Investment Management | 107.87K | 109.55K | 119.67K | 119.78K | 131.21K | 144.15K | 145.94K | 160.88K | 160.88K | 160.88K | 160.88K | 216.83K | 252.00K | 252.00K | 199.90K | — | — | — | 10.58K | 49.30K |
| BNY Mellon | 166.88K | 149.62K | 150.62K | 136.98K | 155.87K | 238.71K | 240.24K | 252.82K | 261.45K | 262.62K | 184.69K | 272.72K | 215.05K | 217.63K | 209.22K | — | — | — | — | 41.37K |
| Bank of America Corp | 36.21K | 116.43K | 267.24K | 21.16K | 43.71K | 145.59K | 315.30K | 68.19K | 89.99K | 111.09K | 57.40K | 95.49K | 129.15K | 106.26K | 109.10K | 78.95K | 119.43K | 4.21K | 18.87K | 36.14K |
| D. E. Shaw & Co | 37.39K | 30.66K | — | 259.40K | 315.01K | 275.59K | 155.20K | 40.72K | — | — | 241.64K | 128.66K | 167.65K | 157.68K | 158.04K | — | — | — | — | 30.13K |
| Deutsche Bank AG | 55.75K | 57.15K | 23.79K | 20.65K | 17.71K | 22.88K | 32.88K | 27.93K | 33.78K | 32.57K | 33.79K | 28.18K | 42.53K | — | — | — | — | — | — | 15.56K |
| Wells Fargo & Co | 112.82K | 52.22K | 38.11K | 2.75K | 1.32K | 5.69K | 50.16K | 27.57K | 19.52K | 23.17K | 27.37K | 41.86K | 42.27K | 52.74K | 49.13K | 693 | — | 100 | — | 13.54K |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details