Simplex Trading’s Keros Therapeutics KROS Stock Holding History

Simplex Trading’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	$246K	Buy	+22,288	New	+$344K	﹤0.01%	4053
2025 Q3	–	Sell	-90,735	Closed	-$1.34M	–	9562
2025 Q2	$1.21M	Buy	90,735 +20,223	+29%	+$273K	﹤0.01%	2589
2025 Q1	$718K	Buy	70,512 +63,125	+855%	+$733K	﹤0.01%	3018
2024 Q4	$116K	Buy	+7,387	New	+$384K	﹤0.01%	5044
2024 Q1	–	Sell	-969	Closed	-$57.5K	–	9367
2023 Q4	$38K	Buy	+969	New	+$30.4K	﹤0.01%	6350
2023 Q1	–	Sell	-53	Closed	-$2.68K	–	9605
2022 Q4	$2K	Sell	53 -212	-80%	-$9.9K	﹤0.01%	8593
2022 Q3	$9K	Buy	265 +105	+66%	+$3.64K	﹤0.01%	8331
2022 Q2	$4K	Buy	+160	New	+$7.02K	﹤0.01%	8986

Other funds holding KROS

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

NCM

Nantahala Capital Management New Canaan, Connecticut $2.72B AUM 121.58% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return

Qube Research & Technologies (QRT) London, United Kingdom $89.9B AUM 20.22% 1-Year Est. Return

Jacobs Levy Equity Management Florham Park, New Jersey $23.8B AUM 25.4% 1-Year Est. Return

Federated Hermes Pittsburgh, Pennsylvania $61.5B AUM 30.7% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

MAP

Madison Avenue Partners New York $2.3B AUM 115.82% 1-Year Est. Return

Simplex Trading's KROS Position: Q1 2026 in Review

Simplex Trading opened a new position in Keros Therapeutics (KROS) in Q1 2026: 22,288 shares worth $246K. The stake represents ﹤0.01% of the portfolio and ranks #4053 among its holdings. This is a return to the name: Simplex Trading previously reported a position in KROS as recently as Q2 2025.

Simplex Trading first reported a position in KROS in Q2 2022 and has held it in 8 quarters since. The position peaked at $1.21M in Q2 2025. 151 funds tracked by Wall St. Rank hold KROS as of Q1 2026.

Simplex Trading held 22,288 shares of Keros Therapeutics worth $246K as of Q1 2026.
Keros Therapeutics was a new Simplex Trading position in Q1 2026.
Keros Therapeutics made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #4053 holding.
Simplex Trading first reported a position in Keros Therapeutics in Q2 2022 and has held it in 8 quarters since.
Simplex Trading's Keros Therapeutics position peaked at $1.21M in Q2 2025.
151 funds tracked by Wall St. Rank held Keros Therapeutics as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.