Jane Street
OSTX

Jane Street’s OS Therapies Inc OSTX Stock Holding History

Jane Street’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 		$51.3K Sell
26,999
-13,317
-33% -$22.3K ﹤0.01% 10930
2026
Q1 		$56.8K Buy
40,316
+12,576
+45% +$17.9K ﹤0.01% 10920
2025
Q4 		$38.8K Buy
+27,740
New +$50K ﹤0.01% 10573

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 $104B AUM 28.3% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Jane Street's OSTX Position: Q2 2026 in Review

Jane Street reduced its OS Therapies Inc (OSTX) stake by 33% in Q2 2026, selling an estimated $22.3K and leaving 26,999 shares worth $51.3K. The position accounts for ﹤0.01% of the portfolio, ranked #10930.

Jane Street first reported a position in OSTX in Q4 2025 and has held it in 3 quarters since. The position peaked at $56.8K in Q1 2026. 29 funds tracked by Wall St. Rank hold OSTX as of Q2 2026.

  • Jane Street held 26,999 shares of OS Therapies Inc worth $51.3K as of Q2 2026.
  • Jane Street sold 13,317 OS Therapies Inc shares in Q2 2026, an estimated $22.3K.
  • OS Therapies Inc made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #10930 holding.
  • Jane Street first reported a position in OS Therapies Inc in Q4 2025 and has held it in 3 quarters since.
  • Jane Street's OS Therapies Inc position peaked at $56.8K in Q1 2026.
  • 29 funds tracked by Wall St. Rank held OS Therapies Inc as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.