EAM Investors’s Quantum Corp QMCO Stock Holding History

EAM Investors’s Portfolio QMCO Stock Details QMCO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$713K	Buy	+64,857	New	+$622K	0.06%	254
2021 Q2	–	Sell	-8,276	Closed	-$1.38M	–	404
2021 Q1	$1.38M	Buy	+8,276	New	+$1.32M	0.21%	243
2016 Q4	–	Sell	-11,366	Closed	-$1.34M	–	351
2016 Q3	$1.34M	Buy	+11,366	New	+$1.11M	0.18%	225
2015 Q3	–	Sell	-3,754	Closed	-$1.01M	–	326
2015 Q2	$1.01M	Sell	3,754 -164	-4%	-$50.1K	0.12%	294
2015 Q1	$1M	Sell	3,918 -604	-13%	-$159K	0.12%	302
2014 Q4	$1.27M	Buy	+4,522	New	+$1.04M	0.18%	246

Other funds holding QMCO

Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return

TSC

Two Seas Capital Rye, New York $5.05B AUM 164.99% 1-Year Est. Return

OCM

Oaktree Capital Management Los Angeles, California $7.21B AUM 45.97% 1-Year Est. Return

Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return

PCM

Portolan Capital Management Boston, Massachusetts $2.67B AUM 169.09% 1-Year Est. Return

ACM

Ashford Capital Management Wilmington, Delaware $933M AUM 56.2% 1-Year Est. Return

Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

MHP

Manatuck Hill Partners Westport, Connecticut $302M AUM 117.41% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

EAM Investors's QMCO Position: Q2 2026 in Review

EAM Investors opened a new position in Quantum Corp (QMCO) in Q2 2026: 64,857 shares worth $713K. The stake represents 0.06% of the portfolio and ranks #254 among its holdings. This is a return to the name: EAM Investors previously reported a position in QMCO as recently as Q1 2021.

EAM Investors first reported a position in QMCO in Q4 2014 and has held it in 6 quarters since. The position peaked at $1.38M in Q1 2021. 60 funds tracked by Wall St. Rank hold QMCO as of Q2 2026.

EAM Investors held 64,857 shares of Quantum Corp worth $713K as of Q2 2026.
Quantum Corp was a new EAM Investors position in Q2 2026.
Quantum Corp made up 0.06% of EAM Investors's portfolio in Q2 2026, its #254 holding.
EAM Investors first reported a position in Quantum Corp in Q4 2014 and has held it in 6 quarters since.
EAM Investors's Quantum Corp position peaked at $1.38M in Q1 2021.
60 funds tracked by Wall St. Rank held Quantum Corp as of Q2 2026.

Based on EAM Investors's 13F filing for Q2 2026, filed 13 Aug 2026.