Renaissance Technologies’s Power Solutions International PSIX Stock Holding History

Renaissance Technologies’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	-107,898	Closed	-$6.17M	–	3778
2025 Q4	$6.17M	Buy	107,898 +1,400	+1%	+$99.9K	0.01%	1191
2025 Q3	$10.5M	Buy	106,498 +50,102	+89%	+$4.44M	0.01%	1076
2025 Q2	$3.65M	Buy	+56,396	New	+$2.09M	﹤0.01%	1721
2016 Q2	–	Sell	-26,946	Closed	-$372K	–	3539
2016 Q1	$372K	Buy	+26,946	New	+$321K	﹤0.01%	2924
2015 Q4	–	Sell	-17,326	Closed	-$393K	–	3462
2015 Q3	$393K	Sell	17,326 -28,967	-63%	-$1.06M	﹤0.01%	2698
2015 Q2	$2.5M	Buy	+46,293	New	+$2.72M	0.01%	1917

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

Renaissance Technologies's PSIX Position: Q1 2026 in Review

Renaissance Technologies sold out of Power Solutions International (PSIX) in Q1 2026, closing a stake of 107,898 shares — an estimated $6.17M sold.

Renaissance Technologies first reported a position in PSIX in Q2 2015 and held it in 6 quarters. The position peaked at $10.5M in Q3 2025. 201 funds tracked by Wall St. Rank hold PSIX as of Q1 2026.

Renaissance Technologies reported no remaining Power Solutions International position as of Q1 2026 after selling out during the quarter.
Renaissance Technologies sold 107,898 Power Solutions International shares in Q1 2026, an estimated $6.17M.
Renaissance Technologies first reported a position in Power Solutions International in Q2 2015 and held it in 6 quarters.
Renaissance Technologies's Power Solutions International position peaked at $10.5M in Q3 2025.
201 funds tracked by Wall St. Rank held Power Solutions International as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.