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Siren LLC’s Cyclerion Therapeutics CYCN Stock Holding History

Siren LLC’s Portfolio CYCN Stock Details CYCN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-115,603
Closed -$147K – 110
2025
Q4 		$147K Sell
115,603
-552
-0.5% -$985 ﹤0.01% 113
2025
Q3 		$267K Hold
116,155
– – 0.01% 113
2025
Q2 		$338K Hold
116,155
– – 0.02% 105
2025
Q1 		$290K Hold
116,155
– – 0.02% 114
2024
Q4 		$374K Hold
116,155
– – 0.02% 115
2024
Q3 		$301K Buy
+116,155
New +$342K 0.02% 109

Other funds holding CYCN

Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
KA
Kovack Advisors Ft. Lauderdale, Florida $2.08B AUM 38.95% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Group One Trading
Group One Trading Chicago, Illinois $52.2B AUM 104.56% 1-Year Est. Return
Osaic Holdings
Osaic Holdings Scottsdale, Arizona $68.3B AUM 20.5% 1-Year Est. Return

Siren LLC's CYCN Position: Q1 2026 in Review

Siren LLC sold out of Cyclerion Therapeutics (CYCN) in Q1 2026, closing a stake of 115,603 shares — an estimated $147K sold.

Siren LLC first reported a position in CYCN in Q3 2024 and held it in 6 quarters. The position peaked at $374K in Q4 2024. 17 funds tracked by Wall St. Rank hold CYCN as of Q1 2026.

  • Siren LLC reported no remaining Cyclerion Therapeutics position as of Q1 2026 after selling out during the quarter.
  • Siren LLC sold 115,603 Cyclerion Therapeutics shares in Q1 2026, an estimated $147K.
  • Siren LLC first reported a position in Cyclerion Therapeutics in Q3 2024 and held it in 6 quarters.
  • Siren LLC's Cyclerion Therapeutics position peaked at $374K in Q4 2024.
  • 17 funds tracked by Wall St. Rank held Cyclerion Therapeutics as of Q1 2026.

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