AI summary pending
View Full Filing (SEC EDGAR)Cytomx Therapeutics Inc
$3.72+1.4%
+$143.3M
Net Activity
+9.11% total shares
Institutions Holding
179
Popularity Rank
#3283
Avg Weight
0.12%
Total Value
$1.0B
Market Cap
$513.1M
179 institutions currently hold CTMX, with 116 net buyers and 83 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
83
Net Buying Institutions
116
Top 5 by Value
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Across its top 20 institutional holders, CTMX's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 17/100, avg. turnover score 44/100).
CTMX ranks #3283 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
179 institutions disclose a position in CTMX, but none treat it as a major bet — even Kynam Capital Management, LP, its most concentrated holder, allocates just 4.5% of its own portfolio to it.
Bank Of America CORP /de/ has added to its CTMX position for two straight quarters, increasing it by $52.8M to reach $56.6M today.
Venrock Adviser, LLC has trimmed its CTMX position for two straight quarters, cutting it by $47.6M while still holding $18.7M.
CTMX is up 1.4% today, and institutions have been net buyers of $143.3M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
CTMX reported a net loss of $79.7M over the trailing twelve months.
+$394.0M
Total Buy Value
$138.2M
Total Sell Value
116
Net Buyers
83
Net Sellers
CTMX
Q2 2026
Top 5 Institutional Movers
+$41.3M
-$28.2M
-$27.5M
+$17.4M
CTMX 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 2026-06-30 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.
No Form 144 planned sale filings in the last 90 days
1
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| Point72 Asset Management, L.P. | 13G/A | 2026-08-14 | 3.6% |
| Kynam Capital Management, LP | 13G/A | 2026-08-14 | 10.0% |
2
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)CytomX Therapeutics appointed Charles Fuchs, M.D., M.P.H., to its Board of Directors effective July 24, 2026, as a Class II director with a term through the 2029 annual meeting. He will receive standard non-employee director compensation, including an option to purchase 118,000 shares that vests monthly over three years. This is a routine board addition.
View Full Filing (SEC EDGAR)23284F105
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,242
Total reported value
$2.2T
3229 13F institutions increased their position this quarter
Institutions Holding
5,990
Total reported value
$3.6T
3033 13F institutions increased their position this quarter
Institutions Holding
6,153
Total reported value
$1.8T
2971 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,763
Total reported value
$1.2T
Held by 4763 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,691
Total reported value
$473.3B
Held by 4691 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,637
Total reported value
$985.7B
Held by 4637 institutions — one of the most-tracked stocks on AlphaSMO
Access CTMX's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/CTMXCLI
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