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ALEC — ALECTOR INC

Reported value held$114.23M
Funds holding (latest)44
SectorHealth Care
Funds holding (Q2 2026)29
Institutional value$58.97M · 29.42M sh
New / Add / Cut / Exit1 / 12 / 14 / 0
Top-5 / Top-10 concentration64.8% / 84.5%
Institutional holdings change Accumulating +1.2% (+337.05K sh)
Institutional value change Down -5.5%

As of Q2 2026, 29 SEC-registered investment managers reported holding ALEC (ALECTOR INC) in their latest 13F filings, with a combined reported value of $58.97M across 29.42M shares. That is +1.2% by share count (+337.05K shares) versus the previous quarter, while reported value moved -5.5%. Ownership is concentrated: the five largest holders account for 64.8% of reported value and the top ten for 84.5%.

Compared with the prior quarter, 1 opened new positions, 12 added to existing stakes, 14 trimmed. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

ALEC 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
Casdin Capital history Q4 2021 1.65M $34.07M 0.97% Hold
BlackRock Inc history Q2 2026 7.85M $15.77M 0.00% Add
Vanguard Group history Q4 2025 6.91M $10.78M 0.00% Add
Balyasny Asset Management history Q2 2026 3.75M $7.54M 0.01% Add
D. E. Shaw & Co history Q2 2026 2.96M $5.95M 0.00% Reduce
Norges Bank Investment Management history Q4 2022 572.90K $5.29M 0.00% New
Geode Capital Management history Q2 2026 2.45M $4.93M 0.00% Add
Millennium Management history Q2 2026 1.99M $4.00M 0.00% Hold
Fidelity Management & Research (FMR) history Q2 2026 1.40M $2.81M 0.00% Reduce
AQR Capital Management history Q2 2026 1.31M $2.63M 0.00% Add
Deutsche Bank AG history Q2 2026 1.10M $2.21M 0.00% Add
Two Sigma Investments history Q2 2026 1.05M $2.10M 0.00% Reduce
Renaissance Technologies history Q2 2026 935.17K $1.88M 0.00% Reduce
Charles Schwab Investment Management history Q2 2026 818.83K $1.65M 0.00% Add
Northern Trust Corp history Q2 2026 773.46K $1.55M 0.00% Add
Marshall Wace history Q2 2026 598.56K $1.20M 0.00% Reduce
Franklin Resources history Q1 2025 834.27K $1.03M 0.00% Reduce
Alkeon Capital Management history Q2 2022 100.00K $1.02M 0.00% New
Citadel Advisors history Q2 2026 500.13K $1.01M 0.00% Add
Arrowstreet Capital history Q3 2022 103.69K $981.00K 0.00% New

View all 44 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

No tracked fund fully exited this 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 — — — — — — — — — — — — 9.35M 9.14M 8.28M 7.97M 7.20M 7.15M 7.74M 7.85M
Balyasny Asset Management — — — — — 3.22K — — — 41.14K — — — — — — — 3.27M 2.94M 3.75M
D. E. Shaw & Co 38.55K — — — — — — 18.20K 119.02K 184.15K 329.62K 352.24K 190.99K 368.98K 469.30K 534.20K 978.20K 2.37M 3.33M 2.96M
Geode Capital Management 999.77K 1.06M 1.08M 1.09M 1.12M 1.19M 1.22M 1.29M 1.30M 1.38M 1.58M 1.76M 1.90M 1.91M 1.96M 1.98M 1.86M 2.08M 2.29M 2.45M
Millennium Management 214.55K 391.21K 1.14M 614.74K 176.57K 50.50K 19.08K 60.47K 356.76K 235.63K 102.20K 156.78K 51.22K 74.69K 264.82K 410.80K 1.16M 1.33M 1.98M 1.99M
Fidelity Management & Research (FMR) 4.83M 4.61M 4.66M 4.70M 4.72M 4.71M 6.39M 7.69M 12.17M 12.62M 14.36M 14.46M 14.60M 14.69M 14.39M 15.00M 15.18M 2.23M 1.80M 1.40M
AQR Capital Management 34.54K 90.58K 166.29K 352.53K 656.03K 179.67K 75.34K 24.20K 63.80K 65.67K 190.21K 184.51K 208.00K 562.94K 492.59K 406.62K 438.09K 599.57K 711.33K 1.31M
Deutsche Bank AG 62.70K 65.32K 61.55K 42.21K 37.85K 150.06K 156.83K 281.23K 33.24K 2.06M 2.64M 2.23M 1.15M 1.11M 1.10M 989.75K 1.07M 1.04M 1.09M 1.10M
Two Sigma Investments 340.49K 347.89K 280.81K 261.23K 279.43K 250.49K 366.31K 287.72K 102.43K 192.55K 364.63K 302.14K 262.52K 407.99K 214.43K 222.14K 307.18K 1.04M 1.28M 1.05M
Renaissance Technologies — 273.48K 705.78K 966.58K 720.58K 591.81K 649.96K 687.08K 502.20K 571.98K 675.48K 655.05K 561.75K 915.74K 1.03M 1.25M 949.15K 1.54M 1.29M 935.17K
Charles Schwab Investment Management 406.11K 412.77K 422.70K 428.01K 445.27K 455.45K 458.95K 469.65K 482.22K 499.53K 674.79K 666.46K 760.61K 643.46K 624.73K 647.65K 689.52K 665.49K 787.41K 818.83K
Northern Trust Corp 606.60K 601.99K 584.47K 595.99K 593.81K 587.65K 597.34K 615.87K 636.07K 614.56K 670.22K 648.73K 719.58K 759.87K 697.23K 658.16K 633.71K 587.65K 692.26K 773.46K
Marshall Wace 312.56K 1.08M 511.14K 629.85K — — — — — — 177.28K 52.61K 54.00K 48.45K 59.10K — 151.64K 1.17M 620.42K 598.56K
Citadel Advisors 265.17K 91.34K 212.34K 344.88K 299.92K 711.64K 43.30K 259.55K 46.86K 47.00K 42.27K 13.20K 217.18K 490.07K 85.04K 595.02K 552.28K 179.95K 109.25K 500.13K
Goldman Sachs Group 594.26K 403.32K 241.14K 419.52K 567.29K 515.58K 341.64K 306.49K 248.22K 285.89K 319.26K 388.39K 511.29K 409.08K 312.14K 374.48K 609.91K 437.96K 604.56K 433.88K
UBS Group AG 141.25K 167.35K 221.79K 82.21K 35.71K 168.10K 112.41K 91.04K 79.68K 178.69K 229.49K 105.69K 116.95K 118.11K 83.05K 41.89K 230.50K 119.41K 145.34K 273.78K
Invesco Ltd 28.55K 26.94K 50.88K 29.49K 31.02K 82.17K 28.12K 32.62K 34.57K 30.13K 31.63K 36.49K 37.58K 47.98K 148.58K 175.80K 192.31K 279.47K 265.07K 257.14K
BNY Mellon 184.22K 204.71K 206.70K 204.22K 223.55K 211.78K 209.09K 234.77K 232.00K 209.05K 230.31K 279.94K 226.11K 230.73K 249.49K 268.87K 224.48K 217.86K 252.30K 250.09K
Bank of America Corp 269.15K 411.01K 332.65K 230.08K 368.34K 424.32K 471.85K 355.17K 425.01K 440.31K 353.65K 363.58K 367.10K 322.85K 337.98K 343.91K 246.28K 134.51K 380.91K 142.68K
CPP Investments — — — — — — — — — — — — — — — — — 172.30K 183.20K 131.30K

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