Citadel Advisors
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Citadel Advisors’s American Shared Hospital Services AMS Stock Holding History

Citadel Advisors’s Portfolio AMS Stock Details AMS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-28,558
Closed -$41.4K – 13626
2026
Q1 		$41.4K Buy
+28,558
New +$59.8K ﹤0.01% 12475
2024
Q1 		– Sell
-24,072
Closed -$57.3K – 14498
2023
Q4 		$57.3K Buy
24,072
+5,391
+29% +$13K ﹤0.01% 11637
2023
Q3 		$46.1K Sell
18,681
-14,542
-44% -$37.9K ﹤0.01% 11844
2023
Q2 		$84.9K Buy
33,223
+19,381
+140% +$53.3K ﹤0.01% 11168
2023
Q1 		$38.9K Buy
+13,842
New +$42.7K ﹤0.01% 12459
2021
Q3 		– Sell
-30,398
Closed -$89K – 13744
2021
Q2 		$89K Buy
30,398
+3,178
+12% +$8.81K ﹤0.01% 13006
2021
Q1 		$75K Buy
27,220
+16,922
+164% +$44K ﹤0.01% 12684
2020
Q4 		$23K Sell
10,298
-5,607
-35% -$10.9K ﹤0.01% 10758
2020
Q3 		$29K Buy
+15,905
New +$32.3K ﹤0.01% 9767
2019
Q2 		– Sell
-14,761
Closed -$41K – 9116
2019
Q1 		$41K Buy
+14,761
New +$38.8K ﹤0.01% 8891

Other funds holding AMS

Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
JIR
James Investment Research Alpha, Ohio $984M AUM 36.03% 1-Year Est. Return
NA
NewEdge Advisors New Orleans, Louisiana $33.6B AUM 31.03% 1-Year Est. Return
BCM
Bridgeway Capital Management Houston, Texas $5.69B AUM 60.64% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
XT
XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return

Citadel Advisors's AMS Position: Q2 2026 in Review

Citadel Advisors sold out of American Shared Hospital Services (AMS) in Q2 2026, closing a stake of 28,558 shares — an estimated $41.4K sold.

Citadel Advisors first reported a position in AMS in Q1 2019 and held it in 10 quarters. The position peaked at $89K in Q2 2021. 19 funds tracked by Wall St. Rank hold AMS as of Q2 2026.

  • Citadel Advisors reported no remaining American Shared Hospital Services position as of Q2 2026 after selling out during the quarter.
  • Citadel Advisors sold 28,558 American Shared Hospital Services shares in Q2 2026, an estimated $41.4K.
  • Citadel Advisors first reported a position in American Shared Hospital Services in Q1 2019 and held it in 10 quarters.
  • Citadel Advisors's American Shared Hospital Services position peaked at $89K in Q2 2021.
  • 19 funds tracked by Wall St. Rank held American Shared Hospital Services as of Q2 2026.

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