Mariner’s Quantum Biopharma Class B Subordinate Voting Shares QNTM Stock Holding History

Mariner’s Portfolio QNTM Stock Details QNTM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$48.6K	Buy	+10,059	New	+$45.4K	﹤0.01%	3430

Other funds holding QNTM

AdvisorShares Investments Bethesda, Maryland $549M AUM 32.58% 1-Year Est. Return

PTP

Platform Technology Partners New York $519M AUM 20% 1-Year Est. Return

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Marex Group London $15.8B AUM 31.44% 1-Year Est. Return

Virtu Financial New York $2.41B AUM 48.35% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Osaic Holdings Scottsdale, Arizona $68.3B AUM 20.5% 1-Year Est. Return

SPIA

Steward Partners Investment Advisory New York $19.6B AUM 22.89% 1-Year Est. Return

AUB

Atlantic Union Bankshares Glen Allen, Virginia $5.21B AUM 19.46% 1-Year Est. Return

Mariner's QNTM Position: Q1 2026 in Review

Mariner opened a new position in Quantum Biopharma Class B Subordinate Voting Shares (QNTM) in Q1 2026: 10,059 shares worth $48.6K. The stake represents ﹤0.01% of the portfolio and ranks #3430 among its holdings.

25 funds tracked by Wall St. Rank hold QNTM as of Q1 2026.

Mariner held 10,059 shares of Quantum Biopharma Class B Subordinate Voting Shares worth $48.6K as of Q1 2026.
Quantum Biopharma Class B Subordinate Voting Shares was a new Mariner position in Q1 2026.
Quantum Biopharma Class B Subordinate Voting Shares made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #3430 holding.
25 funds tracked by Wall St. Rank held Quantum Biopharma Class B Subordinate Voting Shares as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.