Alector
ALEC
138 hedge funds and large institutions have $190M invested in Alector in 2026 Q1 according to their latest regulatory filings, with 29 funds opening new positions, 44 increasing their positions, 36 reducing their positions, and 20 closing their positions.
2,945% more call options, than puts
Call options by funds: $670K | Put options by funds: $22K
45% more first-time investments, than exits
New positions opened: 29 | Existing positions closed: 20
44% more capital invested
Capital invested by funds: $132M → $190M (+$57.8M)
22% more repeat investments, than reductions
Existing positions increased: 44 | Existing positions reduced: 36
5% more funds holding
Funds holding: 131 → 138 (+7)
2.73% more ownership
Funds ownership: 77.37% → 80.1% (+2.7%)
33% less funds holding in top 10
Funds holding in top 10: 6 → 4 (-2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
NCM
Nantahala Capital Management
New Canaan,
Connecticut
|
+$5.66M |
| 2 |
SSC
Spruce Street Capital
New York
|
+$1.97M |
| 3 |
D.E. Shaw & Co
New York
|
+$1.94M |
| 4 |
Millennium Management
New York
|
+$1.3M |
| 5 |
Acadian Asset Management
Boston,
Massachusetts
|
+$1.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jane Street
New York
|
-$1.19M |
| 2 |
VPC
Vestal Point Capital
New York
|
-$1.18M |
| 3 |
Marshall Wace
London,
United Kingdom
|
-$1.1M |
| 4 |
Fidelity Investments
Boston,
Massachusetts
|
-$874K |
| 5 |
Barclays
London,
United Kingdom
|
-$715K |
ALEC Hedge Fund Activity: Q1 2026 in Review
138 of the 8,191 institutional investors tracked by Wall St. Rank reported a position in Alector (ALEC) for Q1 2026, worth a combined $190M — up 44% from $132M a quarter earlier.
Buyers outnumbered sellers: 29 funds opened new ALEC positions and 20 closed out — a net gain of 9 holders — while 44 added to existing stakes and 36 trimmed.
The largest buyer was Nantahala Capital Management, opening a new position worth an estimated $5.66M. The largest seller was Jane Street, cutting an estimated $1.19M.
- 138 institutional investors held Alector (ALEC) as of Q1 2026, up from 131 in Q4 2025.
- Funds reported $190M of Alector stock for Q1 2026, up 44% quarter-over-quarter.
- 29 funds opened new Alector positions in Q1 2026 and 20 closed out, a net change of +9 holders.
- The largest Alector buyer in Q1 2026 was Nantahala Capital Management, an estimated $5.66M added.
- The largest Alector seller in Q1 2026 was Jane Street, an estimated $1.19M sold.
Based on aggregated 13F filings for Q1 2026.