Rafferty Asset Management
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Rafferty Asset Management’s Gossamer Bio GOSS Stock Holding History

Rafferty Asset Management’s Portfolio GOSS Stock Details GOSS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-312,804
Closed -$970K – 1097
2025
Q4 		$970K Buy
+312,804
New +$893K ﹤0.01% 805
2023
Q1 		– Sell
-2,771,503
Closed -$6.01M – 1154
2022
Q4 		$6.01M Buy
2,771,503
+2,542,058
+1,108% +$20.9M 0.05% 340
2022
Q3 		$2.75M Buy
229,445
+83,699
+57% +$1.04M 0.03% 439
2022
Q2 		$1.22M Sell
145,746
-44,727
-23% -$347K 0.01% 586
2022
Q1 		$1.65M Buy
190,473
+6,629
+4% +$63.9K 0.01% 668
2021
Q4 		$2.08M Buy
183,844
+106,084
+136% +$1.26M 0.01% 646
2021
Q3 		$977K Sell
77,760
-35,090
-31% -$323K 0.01% 835
2021
Q2 		$916K Sell
112,850
-60,778
-35% -$527K 0.01% 947
2021
Q1 		$1.61M Buy
173,628
+148,612
+594% +$1.5M 0.01% 680
2020
Q4 		$242K Sell
25,016
-22,817
-48% -$225K ﹤0.01% 923
2020
Q3 		$594K Buy
47,833
+31,042
+185% +$412K 0.01% 667
2020
Q2 		$218K Buy
+16,791
New +$211K ﹤0.01% 909
2020
Q1 		– Sell
-42,710
Closed -$668K – 688
2019
Q4 		$668K Buy
+42,710
New +$860K 0.01% 638

Other funds holding GOSS

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
KCM
Kalehua Capital Management Dallas, Texas $141M AUM
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
AVM
Arch Venture Management Chicago, Illinois $677M AUM 322.07% 1-Year Est. Return
OCA
Octagon Capital Advisors New York $904M AUM 737.04% 1-Year Est. Return
SB
Samsara BioCapital Palo Alto, California $1.03B AUM 214.94% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return

Rafferty Asset Management's GOSS Position: Q1 2026 in Review

Rafferty Asset Management sold out of Gossamer Bio (GOSS) in Q1 2026, closing a stake of 312,804 shares — an estimated $970K sold.

Rafferty Asset Management first reported a position in GOSS in Q4 2019 and held it in 13 quarters. The position peaked at $6.01M in Q4 2022. 184 funds tracked by Wall St. Rank hold GOSS as of Q1 2026.

  • Rafferty Asset Management reported no remaining Gossamer Bio position as of Q1 2026 after selling out during the quarter.
  • Rafferty Asset Management sold 312,804 Gossamer Bio shares in Q1 2026, an estimated $970K.
  • Rafferty Asset Management first reported a position in Gossamer Bio in Q4 2019 and held it in 13 quarters.
  • Rafferty Asset Management's Gossamer Bio position peaked at $6.01M in Q4 2022.
  • 184 funds tracked by Wall St. Rank held Gossamer Bio as of Q1 2026.

Based on Rafferty Asset Management's 13F filing for Q1 2026, filed 15 May 2026.