2026-08-21
AI summary pending
View Full Filing (SEC EDGAR)Os Therapies Inc
$1.88+3.3%
+$145.2K
Net Activity
-0.05% total shares
Institutions Holding
30
Popularity Rank
#7463
Avg Weight
0.02%
Total Value
$5.5M
Market Cap
$55.0M
30 institutions currently hold OSTX, with 21 net buyers and 10 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
10
Net Buying Institutions
21
Top 5 by Value
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Across its top 20 institutional holders, OSTX's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 7/100, avg. turnover score 37/100).
OSTX ranks #7463 out of 37503 tracked stocks by institutional interest, inside the more closely watched half of our coverage.
30 institutions disclose a position in OSTX, but none treat it as a major bet — even CM Management, LLC, its most concentrated holder, allocates just 0.5% of its own portfolio to it.
BlackRock has added to its OSTX position for two straight quarters, increasing it by $374.7K to reach $460.7K today.
OSTX reported a net loss of $28.8M in its latest fiscal year.
+$1.7M
Total Buy Value
$1.6M
Total Sell Value
21
Net Buyers
10
Net Sellers
OSTX
Q2 2026
Top 5 Institutional Movers
OSTX 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
No Schedule 13D/13G filings for this ticker
6
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)OS Therapies Inc. terminated its at-the-market stock offering agreement with B. Riley Securities and JonesTrading on July 23, 2026, effective July 28. The agreement allowed for up to $18 million in stock sales, but the company had only sold about $530,000 worth of shares, leaving roughly $17.5 million unsold. No termination fees were incurred.
View Full Filing (SEC EDGAR)No AI summary for this filing type
View Full Filing (SEC EDGAR)OS Therapies Inc. (OSTX) entered into a securities purchase agreement with an investor for a senior secured convertible promissory note of up to $10 million. The first tranche of $1.6 million is expected to fund on July 2, 2026, and the company will also issue 275,000 commitment shares and a five-year warrant to purchase 1.75 million shares. Proceeds will be used for clinical development, regulatory activities, and working capital.
View Full Filing (SEC EDGAR)68764Y207
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,243
Total reported value
$2.2T
3231 13F institutions increased their position this quarter
Institutions Holding
5,991
Total reported value
$3.6T
3034 13F institutions increased their position this quarter
Institutions Holding
6,154
Total reported value
$1.8T
2973 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,764
Total reported value
$1.2T
Held by 4764 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,692
Total reported value
$473.3B
Held by 4692 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,638
Total reported value
$985.8B
Held by 4638 institutions — one of the most-tracked stocks on AlphaSMO
Access OSTX's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/OSTXCLI
npx alphasmo stocks get OSTX