Sio Capital Management’s ProQR Therapeutics PRQR Stock Holding History

Sio Capital Management’s Portfolio PRQR Stock Details PRQR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$3.17M	Sell	1,954,715 -209,466	-10%	-$343K	0.45%	49
2025 Q4	$4.37M	Buy	2,164,181 +89,042	+4%	+$208K	0.69%	35
2025 Q3	$4.42M	Hold	2,075,139	–	–	1.12%	26
2025 Q2	$4.23M	Buy	2,075,139 +20,546	+1%	+$33.4K	1.62%	19
2025 Q1	$2.73M	Hold	2,054,593	–	–	0.81%	29
2024 Q4	$5.44M	Buy	+2,054,593	New	+$6.52M	1.53%	22
2021 Q3	–	Sell	-380,045	Closed	-$2.56M	–	77
2021 Q2	$2.56M	Sell	380,045 -12,776	-3%	-$82.4K	0.64%	47
2021 Q1	$2.6M	Buy	+392,821	New	+$2.01M	0.53%	58

Other funds holding PRQR

Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

PFM

Privium Fund Management Amsterdam, Netherlands $480M AUM 77.45% 1-Year Est. Return

Aberdeen Group Edinburgh, United Kingdom $61.9B AUM 29.81% 1-Year Est. Return

AAA

Affinity Asset Advisors New York $1.94B AUM 374.45% 1-Year Est. Return

DCM

DAFNA Capital Management Los Angeles, California $440M AUM 109.12% 1-Year Est. Return

KCM

Kynam Capital Management Princeton, New Jersey $1.62B AUM 138.67% 1-Year Est. Return

Ikarian Capital Dallas, Texas $1.23B AUM 600.17% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

PIM

Platinum Investment Management Sydney Australia 2000, Australia $397M AUM 63.96% 1-Year Est. Return

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Sio Capital Management's PRQR Position: Q1 2026 in Review

Sio Capital Management reduced its ProQR Therapeutics (PRQR) stake by 9.7% in Q1 2026, selling an estimated $343K and leaving 1,954,715 shares worth $3.17M. The position accounts for 0.45% of the portfolio, ranked #49.

Sio Capital Management first reported a position in PRQR in Q1 2021 and has held it in 8 quarters since. The position peaked at $5.44M in Q4 2024. 69 funds tracked by Wall St. Rank hold PRQR as of Q1 2026.

Sio Capital Management held 1,954,715 shares of ProQR Therapeutics worth $3.17M as of Q1 2026.
Sio Capital Management sold 209,466 ProQR Therapeutics shares in Q1 2026, an estimated $343K.
ProQR Therapeutics made up 0.45% of Sio Capital Management's portfolio in Q1 2026, its #49 holding.
Sio Capital Management first reported a position in ProQR Therapeutics in Q1 2021 and has held it in 8 quarters since.
Sio Capital Management's ProQR Therapeutics position peaked at $5.44M in Q4 2024.
69 funds tracked by Wall St. Rank held ProQR Therapeutics as of Q1 2026.

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