Institutional Ownership
Alector Inc
CUSIP 014442107COMALECQ1 2026
Institutional Holders
133
13F filers
Shares Held
81.52M
Aggregate institutional
Institutional Value
$166.26M
Q1 2026
Net New Holders
+8
26 new · 18 closed
Institutional Ownership Trend
Aggregate 13F value by quarter
Multi-quarter trend — upgrade to see history
UpgradePosition Activity
Q1 2026
New positions26
Increased43
Decreased36
Sold out18
Institutional Holders
133 funds hold this security · Q1 2026
| # | Fund | Shares | Value | Δ Shares | Activity |
|---|---|---|---|---|---|
| 1 | Tcg Crossover Management, LLC | 10.00M | $21.50M | 0 | Held |
| 2 | Blackrock, Inc. | 7.74M | $16.64M | +593.5K | Added |
| 3 | Foresite Capital Management IV, LLC | 3.89M | $8.36M | 0 | Held |
| 4 | Merck & Co., Inc. | 3.55M | $7.62M | 0 | Held |
| 5 | D. E. Shaw & Co., Inc. | 3.33M | $7.17M | +967.7K | Added |
| 6 | 683 Capital Management, LLC | 3.20M | $6.88M | −150.0K | Reduced |
| 7 | Balyasny Asset Management L.P. | 2.94M | $6.31M | −330.3K | Reduced |
| 8 | Nantahala Capital Management, LLC | 2.82M | $6.05M | +2.82M | New |
| 9 | Geode Capital Management, LLC | 2.29M | $4.92M | +211.0K | Added |
| 10 | Jacobs Levy Equity Management, Inc | 2.15M | $4.63M | −18.8K | Reduced |
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