Driehaus Capital Management’s Power Solutions International PSIX Stock Holding History

Driehaus Capital Management’s Portfolio PSIX Stock Details PSIX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-229,120	Closed	-$13.1M	–	457
2025 Q4	$13.1M	Buy	229,120 +94,618	+70%	+$6.75M	0.09%	258
2025 Q3	$13.2M	Buy	+134,502	New	+$11.9M	0.09%	245
2014 Q4	–	Sell	-21,577	Closed	-$1.49M	–	601
2014 Q3	$1.49M	Sell	21,577 -56,191	-72%	-$3.8M	0.06%	379
2014 Q2	$5.6M	Sell	77,768 -36,832	-32%	-$2.83M	0.18%	152
2014 Q1	$8.61M	Buy	114,600 +29,400	+35%	+$2.12M	0.27%	90
2013 Q4	$6.4M	Buy	85,200 +47,688	+127%	+$3.13M	0.23%	136
2013 Q3	$2.22M	Buy	+37,512	New	+$1.83M	0.09%	262

Other funds holding PSIX

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

Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

Situational Awareness San Francisco, California $13.7B AUM 334.5% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Allspring Global Investments Charlotte, North Carolina $59.7B AUM 29.08% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return

Busey Bank Urbana, Illinois $3.68B AUM 26.6% 1-Year Est. Return

SG Americas Securities New York $92.9B AUM 36.98% 1-Year Est. Return

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

Driehaus Capital Management's PSIX Position: Q1 2026 in Review

Driehaus Capital Management sold out of Power Solutions International (PSIX) in Q1 2026, closing a stake of 229,120 shares — an estimated $13.1M sold.

Driehaus Capital Management first reported a position in PSIX in Q3 2013 and held it in 7 quarters. The position peaked at $13.2M in Q3 2025. 201 funds tracked by Wall St. Rank hold PSIX as of Q1 2026.

Driehaus Capital Management reported no remaining Power Solutions International position as of Q1 2026 after selling out during the quarter.
Driehaus Capital Management sold 229,120 Power Solutions International shares in Q1 2026, an estimated $13.1M.
Driehaus Capital Management first reported a position in Power Solutions International in Q3 2013 and held it in 7 quarters.
Driehaus Capital Management's Power Solutions International position peaked at $13.2M in Q3 2025.
201 funds tracked by Wall St. Rank held Power Solutions International as of Q1 2026.

Based on Driehaus Capital Management's 13F filing for Q1 2026, filed 15 May 2026.