JO
OSTX

John Overdeck’s OS Therapies Inc OSTX Stock Holding History

John Overdeck’s Portfolio OSTX Stock Details OSTX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$57.8K Buy
30,414
+4,034
+15% +$6.77K ﹤0.01% 4943
2026
Q1 		$37.2K Sell
26,380
-61,157
-70% -$86.8K ﹤0.01% 4480
2025
Q4 		$123K Buy
87,537
+1,290
+1% +$2.33K ﹤0.01% 3840
2025
Q3 		$169K Buy
+86,247
New +$171K ﹤0.01% 3407

Other funds holding OSTX

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
CM
CM Management Gulf Breeze, Florida $157M AUM 60.08% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
HFS
Howard Financial Services Dallas, Texas $1B AUM 20.02% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
HighTower Advisors
HighTower Advisors Chicago, Illinois $103B AUM 28.65% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

John Overdeck's OSTX Position: Q2 2026 in Review

John Overdeck increased its OS Therapies Inc (OSTX) stake by 15% in Q2 2026, buying an estimated $6.77K and bringing the position to 30,414 shares worth $57.8K. The position accounts for ﹤0.01% of the portfolio, ranked #4943.

John Overdeck first reported a position in OSTX in Q3 2025 and has held it in 4 quarters since. The position peaked at $169K in Q3 2025. 29 funds tracked by Wall St. Rank hold OSTX as of Q2 2026.

  • John Overdeck held 30,414 shares of OS Therapies Inc worth $57.8K as of Q2 2026.
  • John Overdeck bought 4,034 OS Therapies Inc shares in Q2 2026, an estimated $6.77K.
  • OS Therapies Inc made up ﹤0.01% of John Overdeck's portfolio in Q2 2026, its #4943 holding.
  • John Overdeck first reported a position in OS Therapies Inc in Q3 2025 and has held it in 4 quarters since.
  • John Overdeck's OS Therapies Inc position peaked at $169K in Q3 2025.
  • 29 funds tracked by Wall St. Rank held OS Therapies Inc as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.