Castleark Management’s Flex FLEX Stock Holding History

Castleark Management’s Portfolio FLEX Stock Details FLEX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$693K	Buy	10,580 +4,870	+85%	+$311K	0.02%	239
2025 Q4	$345K	Buy	5,710 +3,000	+111%	+$185K	0.01%	261
2025 Q3	$157K	Hold	2,710	–	–	﹤0.01%	269
2025 Q2	$135K	Buy	+2,710	New	+$106K	﹤0.01%	260
2020 Q2	–	Sell	-610,234	Closed	-$3.85M	–	358
2020 Q1	$3.85M	Buy	+610,234	New	+$5.28M	0.23%	120

Other funds holding FLEX

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

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

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

Castleark Management's FLEX Position: Q1 2026 in Review

Castleark Management increased its Flex (FLEX) stake by 85% in Q1 2026, buying an estimated $311K and bringing the position to 10,580 shares worth $693K. The position accounts for 0.02% of the portfolio, ranked #239.

Castleark Management first reported a position in FLEX in Q1 2020 and has held it in 5 quarters since. The position peaked at $3.85M in Q1 2020. 783 funds tracked by Wall St. Rank hold FLEX as of Q1 2026.

Castleark Management held 10,580 shares of Flex worth $693K as of Q1 2026.
Castleark Management bought 4,870 Flex shares in Q1 2026, an estimated $311K.
Flex made up 0.02% of Castleark Management's portfolio in Q1 2026, its #239 holding.
Castleark Management first reported a position in Flex in Q1 2020 and has held it in 5 quarters since.
Castleark Management's Flex position peaked at $3.85M in Q1 2020.
783 funds tracked by Wall St. Rank held Flex as of Q1 2026.

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