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Polymer Capital Management’s Keros Therapeutics KROS Stock Holding History

Polymer Capital Management’s Portfolio KROS Stock Details KROS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-17,495
Closed -$356K – 920
2025
Q4 		$356K Buy
17,495
+6,347
+57% +$111K 0.04% 575
2025
Q3 		$176K Sell
11,148
-16,033
-59% -$237K 0.02% 702
2025
Q2 		$363K Buy
27,181
+15,640
+136% +$211K 0.04% 384
2025
Q1 		$118K Buy
+11,541
New +$134K 0.03% 466

Other funds holding KROS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $3.01B AUM 119.46% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
O
OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $108B AUM 37.29% 1-Year Est. Return
Jacobs Levy Equity Management
Jacobs Levy Equity Management Florham Park, New Jersey $27.8B AUM 46.46% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $69.6B AUM 42.52% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
MAP
Madison Avenue Partners New York $2.32B AUM 132.6% 1-Year Est. Return

Polymer Capital Management's KROS Position: Q1 2026 in Review

Polymer Capital Management sold out of Keros Therapeutics (KROS) in Q1 2026, closing a stake of 17,495 shares — an estimated $356K sold.

Polymer Capital Management first reported a position in KROS in Q1 2025 and held it in 4 quarters. The position peaked at $363K in Q2 2025. 151 funds tracked by Wall St. Rank hold KROS as of Q1 2026.

  • Polymer Capital Management reported no remaining Keros Therapeutics position as of Q1 2026 after selling out during the quarter.
  • Polymer Capital Management sold 17,495 Keros Therapeutics shares in Q1 2026, an estimated $356K.
  • Polymer Capital Management first reported a position in Keros Therapeutics in Q1 2025 and held it in 4 quarters.
  • Polymer Capital Management's Keros Therapeutics position peaked at $363K in Q2 2025.
  • 151 funds tracked by Wall St. Rank held Keros Therapeutics as of Q1 2026.

Based on Polymer Capital Management's 13F filing for Q1 2026, filed 14 May 2026.