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View Full Filing (SEC EDGAR)Cullinan Therapeutics Inc
$12.93-7.6%
+$178.3M
Net Activity
+10.92% total shares
Institutions Holding
185
Popularity Rank
#3212
Avg Weight
0.30%
Total Value
$1.4B
Market Cap
$771.9M
185 institutions currently hold CGEM, with 121 net buyers and 67 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
67
Net Buying Institutions
121
Top 5 by Value
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Across its top 20 institutional holders, CGEM's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 20/100, avg. turnover score 46/100).
CGEM ranks #3212 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
CGEM is a top-conviction position for Lynx1 Capital Management LP — at 18.9% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in CGEM belongs to MPM BioImpact LLC, but the position matters far more to Lynx1 Capital Management LP, who has 18.9% 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.
GAMMA Investing LLC has added to its CGEM position for two straight quarters, increasing it by $15.9K to reach $40.9K today.
Essential Partners LLC has trimmed its CGEM position for two straight quarters, cutting it by $3.5K while still holding $7.8K.
CGEM is down 7.6% today, but institutions show net buying of $178.3M this quarter — a divergence between today's price move and the underlying institutional flow.
CGEM reported a net loss of $204.7M over the trailing twelve months.
+$300.3M
Total Buy Value
$104.5M
Total Sell Value
121
Net Buyers
67
Net Sellers
CGEM
Q2 2026
Top 5 Institutional Movers
+$68.5M
+$40.8M
+$35.9M
+$32.1M
CGEM 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.
2
Filings (90d)
$765K
Total Est. Value
38K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| JENNIFER MICHAELSON | 2026-09-08 | $177K |
| JENNIFER MICHAELSON | 2026-08-13 | $588K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
1
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| BIOTECHNOLOGY VALUE FUND L P | 13G/A | 2026-08-14 | 10.0% |
5
Filings (14d)
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View Full Filing (SEC EDGAR)230031106
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
5,283
Total reported value
$1.3T
Held by 5283 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
5,174
Total reported value
$671.0B
Held by 5174 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
5,106
Total reported value
$1.1T
Held by 5106 institutions — one of the most-tracked stocks on AlphaSMO
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