Citadel Advisors
SI

Citadel Advisors’s Shoulder Innovations Inc SI Stock Holding History

Citadel Advisors’s Portfolio SI Stock Details SI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$746K Buy
36,795
+23,271
+172% +$357K ﹤0.01% 8909
2026
Q1 		$197K Sell
13,524
-5,256
-28% -$73.1K ﹤0.01% 11434
2025
Q4 		$269K Sell
18,780
-31,220
-62% -$426K ﹤0.01% 10390
2025
Q3 		$628K Buy
+50,000
New +$699K ﹤0.01% 8582

Other funds holding SI

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SAM
Sectoral Asset Management Montreal, Quebec, Canada $143M AUM 102.52% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
KC
KCM Capital Shawnee, Kansas $618M AUM
TCM
TimesSquare Capital Management New York $6.8B AUM 45.85% 1-Year Est. Return
RC
Roubaix Capital Denver, Colorado $279M AUM 54.84% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return
PHP
Parkman Healthcare Partners Stamford, Connecticut $977M AUM 110.37% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Citadel Advisors's SI Position: Q2 2026 in Review

Citadel Advisors increased its Shoulder Innovations Inc (SI) stake by 172% in Q2 2026, buying an estimated $357K and bringing the position to 36,795 shares worth $746K. The position accounts for ﹤0.01% of the portfolio, ranked #8909.

Citadel Advisors first reported a position in SI in Q3 2025 and has held it in 4 quarters since. 71 funds tracked by Wall St. Rank hold SI as of Q2 2026.

  • Citadel Advisors held 36,795 shares of Shoulder Innovations Inc worth $746K as of Q2 2026.
  • Citadel Advisors bought 23,271 Shoulder Innovations Inc shares in Q2 2026, an estimated $357K.
  • Shoulder Innovations Inc made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #8909 holding.
  • Citadel Advisors first reported a position in Shoulder Innovations Inc in Q3 2025 and has held it in 4 quarters since.
  • 71 funds tracked by Wall St. Rank held Shoulder Innovations Inc as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.