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Siren LLC’s Instil Bio TIL Stock Holding History

Siren LLC’s Portfolio TIL Stock Details TIL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-203,933
Closed -$2.24M – 123
2025
Q4 		$2.24M Hold
203,933
– – 0.07% 103
2025
Q3 		$3.64M Hold
203,933
– – 0.14% 75
2025
Q2 		$4.25M Hold
203,933
– – 0.22% 69
2025
Q1 		$3.54M Buy
203,933
+11,500
+6% +$239K 0.2% 70
2024
Q4 		$3.67M Hold
192,433
– – 0.16% 74
2024
Q3 		$13M Buy
+192,433
New +$4.53M 0.65% 40

Other funds holding TIL

CVV
Curative Ventures V Dallas, Texas $15.6M AUM 52.53% 1-Year Est. Return
BCM
BML Capital Management Zionsville, Indiana $156M AUM 129.82% 1-Year Est. Return
CI
CPMG Inc Dallas, Texas $37.1M AUM 74.35% 1-Year Est. Return
VC
Vivo Capital Palo Alto, California $1.2B AUM 911.44% 1-Year Est. Return
KCM
Kalehua Capital Management Dallas, Texas $141M AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
NAMI
Nomura Asset Management International Philadelphia, Pennsylvania $58.4B AUM

Siren LLC's TIL Position: Q1 2026 in Review

Siren LLC sold out of Instil Bio (TIL) in Q1 2026, closing a stake of 203,933 shares — an estimated $2.24M sold.

Siren LLC first reported a position in TIL in Q3 2024 and held it in 6 quarters. The position peaked at $13M in Q3 2024. 32 funds tracked by Wall St. Rank hold TIL as of Q1 2026.

  • Siren LLC reported no remaining Instil Bio position as of Q1 2026 after selling out during the quarter.
  • Siren LLC sold 203,933 Instil Bio shares in Q1 2026, an estimated $2.24M.
  • Siren LLC first reported a position in Instil Bio in Q3 2024 and held it in 6 quarters.
  • Siren LLC's Instil Bio position peaked at $13M in Q3 2024.
  • 32 funds tracked by Wall St. Rank held Instil Bio as of Q1 2026.

Based on Siren LLC's 13F filing for Q1 2026, filed 14 May 2026.