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DYN — DYNE THERAPEUTICS INC

Reported value held$1.52B
Funds holding (latest)42
SectorHealth Care
Funds holding (Q2 2026)31
Institutional value$1.02B · 49.99M sh
New / Add / Cut / Exit3 / 22 / 4 / 2
Top-5 / Top-10 concentration71.0% / 88.8%
Institutional holdings change Reducing -2.7% (-1.41M sh)
Institutional value change Up +14.7%

As of Q2 2026, 31 SEC-registered investment managers reported holding DYN (DYNE THERAPEUTICS INC) in their latest 13F filings, with a combined reported value of $1.02B across 49.99M shares. That is -2.7% by share count (-1.41M shares) versus the previous quarter, while reported value moved +14.7%. Ownership is concentrated: the five largest holders account for 71.0% of reported value and the top ten for 88.8%.

Compared with the prior quarter, 3 opened new positions, 22 added to existing stakes, 4 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

DYN 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.

FundQuarterSharesValuePortfolio WeightChange
BlackRock Inc history Q2 2026 12.40M $275.50M 0.00% Add
Fidelity Management & Research (FMR) history Q2 2026 11.21M $248.91M 0.01% Add
Janus Henderson Group history Q1 2026 13.65M $247.43M 0.12% Reduce
Vanguard Group history Q4 2025 11.22M $219.38M 0.00% Add
Geode Capital Management history Q2 2026 3.74M $83.16M 0.00% Add
JPMorgan Chase & Co history Q2 2026 3.15M $67.15M 0.01% New
Bank of America Corp history Q2 2026 2.23M $49.60M 0.00% Add
Goldman Sachs Group history Q2 2026 2.16M $47.91M 0.00% Add
Franklin Resources history Q2 2026 2.03M $45.10M 0.01% Add
Marshall Wace history Q2 2026 1.49M $33.07M 0.03% Add
Northern Trust Corp history Q2 2026 1.28M $28.39M 0.00% Add
Charles Schwab Investment Management history Q2 2026 1.20M $26.70M 0.00% Add
Citadel Advisors history Q2 2026 1.19M $26.37M 0.00% Add
Morgan Stanley history Q2 2026 746.20K $16.57M 0.00% Reduce
UBS Group AG history Q2 2026 443.28K $9.85M 0.00% Add
Millennium Management history Q2 2026 431.85K $9.59M 0.00% Add
BNY Mellon history Q2 2026 409.80K $9.10M 0.00% Add
Balyasny Asset Management history Q4 2025 432.99K $8.47M 0.01% New
Renaissance Technologies history Q2 2026 360.57K $8.01M 0.01% Reduce
Moore Capital Management history Q2 2026 305.79K $6.79M 0.11% Add

View all 42 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
BlackRock Inc — — — — — — — — — — — — 7.79M 7.95M 8.05M 8.08M 9.63M 11.19M 11.70M 12.40M
Fidelity Management & Research (FMR) — 17.20K 72.77K 72.83K 73.24K 574.12K 409.06K 899.29K 846.36K 1.28M 3.22M 5.32M 9.03M 8.00M 5.20M 5.29M 5.40M 6.57M 8.91M 11.21M
Geode Capital Management 415.52K 482.95K 488.80K 499.12K 533.62K 546.55K 568.52K 739.19K 857.71K 932.84K 1.31M 1.77M 1.86M 1.89M 1.96M 2.25M 2.87M 3.26M 3.50M 3.74M
JPMorgan Chase & Co 93.68K 37.84K 27.86K 35.32K 43.78K 20.44K 2.60K 35.61K 338.17K 41.48K 54.37K 97.51K 101.75K 98.39K 2.53M 3.09M 3.37M 3.55M — 3.15M
Bank of America Corp 13.30K 64.02K 32.77K 28.31K 50.82K 35.77K 71.97K 91.73K 93.76K 40.78K 152.63K 176.77K 291.71K 122.64K 269.98K 513.80K 761.11K 882.92K 1.44M 2.23M
Goldman Sachs Group 39.27K 84.62K 78.56K 66.04K 397.57K 836.02K 1.49M 2.01M 1.51M 1.16M 1.66M 2.10M 670.48K 628.70K 994.89K 1.34M 1.90M 2.28M 1.72M 2.16M
Franklin Resources 1.12M 1.19M 1.18M 1.75M 1.78M 1.78M 1.89M 1.91M 1.91M 1.91M 1.78M 1.71M 1.34M 1.32M 1.41M 1.39M 1.40M 2.01M 2.01M 2.03M
Marshall Wace 22.05K 349.28K 349.28K 349.28K 64.91K 22.05K 132.34K 22.05K 22.05K — 53.70K 273.57K — 24.50K — 447.81K 3.01M 676.98K 83.15K 1.49M
Northern Trust Corp 257.21K 261.24K 256.66K 266.04K 266.58K 281.04K 274.47K 380.93K 394.25K 423.08K 547.03K 619.64K 721.50K 777.01K 722.46K 841.04K 1.04M 1.09M 1.20M 1.28M
Charles Schwab Investment Management 184.18K 188.56K 192.48K 179.15K 222.43K 228.14K 227.58K 285.12K 325.37K 331.57K 461.52K 601.06K 648.65K 667.45K 654.13K 745.07K 1.01M 1.15M 1.16M 1.20M
Citadel Advisors 2.87M 2.86M 2.96M 2.93M 2.96M 2.99M 3.04M 2.71M 3.05M 3.10M 4.31M 4.33M 2.97M 2.89M 3.07M 960.37K 3.46M 1.23M 240.54K 1.19M
Morgan Stanley 103.78K 373.92K 304.54K 228.05K 129.54K 64.43K 113.63K 114.84K 107.74K 2.02M 962.16K 559.05K 1.05M 753.59K 1.39M 1.36M 1.42M 1.21M 929.00K 746.20K
UBS Group AG 25 412 10.17K 1.03K 1.05K 9.58K 1.45K 22.57K 54.16K 124.05K 233.33K 243.93K 625.72K 540.11K 357.75K 121.79K 349.39K 380.98K 380.56K 443.28K
Millennium Management — — — — 81.95K 254.11K 190.36K — — 388.09K 18.01K — 5.99K 37.54K 78.18K 142.72K 413.94K 904.39K 158.55K 431.85K
BNY Mellon 405.26K 115.95K 112.09K 109.50K 119.57K 127.30K 126.86K 150.25K 157.44K 170.56K 204.27K 311.50K 234.10K 234.80K 232.63K 269.66K 317.36K 353.50K 401.62K 409.80K
Renaissance Technologies 140.50K 68.50K 42.70K 91.20K 104.90K 107.70K 73.30K — — — — 126.00K — — — — 345.50K 470.64K 533.60K 360.57K
Moore Capital Management — — — — — — — — — — — — — — — — — — 78.77K 305.79K
Deutsche Bank AG 17.27K 18.25K 16.31K 14.25K 14.19K 18.40K 19.52K 17.39K 21.42K 20.90K 27.08K 34.04K 46.86K 70.96K 317.66K 318.65K 125.89K 196.08K 221.12K 242.39K
Wells Fargo & Co — 12.04K 1.37K 356 41 — 5.85K 36.32K 35.25K 13.03K 19.96K 26.06K 25.08K 38.75K 40.16K 56.70K 87.12K 147.83K 145.51K 220.66K
Citigroup Inc 3.79K 13.92K 7.43K 402.66K 126.58K 10.17K 4.45K 50.39K 61.90K 71.60K 300.13K 36.71K 64.44K 142.92K 194.96K 61.53K 33.38K 36.66K 37.80K 187.91K

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