AI summary pending
View Full Filing (SEC EDGAR)Tectonic Therapeutic Inc
$20.65-3.1%
+$7.7M
Net Activity
-0.21% total shares
Institutions Holding
126
Popularity Rank
#4084
Avg Weight
0.14%
Total Value
$488.2M
Market Cap
$378.4M
126 institutions currently hold TECX, with 69 net buyers and 51 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
51
Net Buying Institutions
69
Top 5 by Value
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Across its top 20 institutional holders, TECX's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 13/100, avg. turnover score 46/100).
TECX ranks #4084 out of 37696 tracked stocks by institutional interest, inside the more closely watched half of our coverage.
TECX is a top-conviction position for 5AM Venture Management, LLC — at 7.2% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in TECX belongs to FMR LLC, but the position matters far more to 5AM Venture Management, LLC, who has 7.2% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
Farther Finance Advisors, LLC has trimmed its TECX position for two straight quarters, cutting it by $3.1K while still holding $70.0.
TECX is down 3.1% today, but institutions show net buying of $7.7M this quarter — a divergence between today's price move and the underlying institutional flow.
TECX reported a net loss of $74.2M in its latest fiscal year.
+$36.1M
Total Buy Value
$34.0M
Total Sell Value
69
Net Buyers
51
Net Sellers
TECX
Q2 2026
Top 5 Institutional Movers
+$10.2M
+$7.5M
-$5.7M
+$4.5M
+$4.2M
TECX does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
4
Filings (90d)
$676K
Total Est. Value
18K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| PETER MCNAMARA | 2026-09-30 | $12K |
| TERRANCE MCGUIRE | 2026-08-27 | $277K |
| TERRANCE MCGUIRE | 2026-08-21 | $384K |
| PETER MCNAMARA | 2026-08-12 | $4K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
2
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)878972108
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,255
Total reported value
$346.5B
Held by 4255 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,146
Total reported value
$257.5B
Held by 4146 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,137
Total reported value
$279.7B
Held by 4137 institutions — one of the most-tracked stocks on AlphaSMO
Access TECX's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/TECXCLI
npx alphasmo stocks get TECXFull API & MCP documentation →