Mariner
QNTM

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
Q2 		$36.2K Sell
10,000
-59
-0.6% -$278 ﹤0.01% 3444
2026
Q1 		$48.6K Buy
+10,059
New +$45.4K ﹤0.01% 3430

Other funds holding QNTM

AI
AdvisorShares Investments Bethesda, Maryland $828M AUM 37.72% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
PTP
Platform Technology Partners New York $611M AUM 25.5% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
SPIA
Steward Partners Investment Advisory New York $19.6B AUM 29.84% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return
MG
Marex Group London $23.6B AUM 57.16% 1-Year Est. Return
NS
NBC Securities Birmingham, Alabama $1.48B AUM 31.07% 1-Year Est. Return
Osaic Holdings
Osaic Holdings Scottsdale, Arizona $85.1B AUM 27.35% 1-Year Est. Return
GRP
Global Retirement Partners San Rafael, California $6.54B AUM

Mariner's QNTM Position: Q2 2026 in Review

Mariner reduced its Quantum Biopharma Class B Subordinate Voting Shares (QNTM) stake by 0.59% in Q2 2026, selling an estimated $278 and leaving 10,000 shares worth $36.2K. The position accounts for ﹤0.01% of the portfolio, ranked #3444.

Mariner first reported a position in QNTM in Q1 2026 and has held it in 2 quarters since. The position peaked at $48.6K in Q1 2026. 26 funds tracked by Wall St. Rank hold QNTM as of Q2 2026.

  • Mariner held 10,000 shares of Quantum Biopharma Class B Subordinate Voting Shares worth $36.2K as of Q2 2026.
  • Mariner sold 59 Quantum Biopharma Class B Subordinate Voting Shares shares in Q2 2026, an estimated $278.
  • Quantum Biopharma Class B Subordinate Voting Shares made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #3444 holding.
  • Mariner first reported a position in Quantum Biopharma Class B Subordinate Voting Shares in Q1 2026 and has held it in 2 quarters since.
  • Mariner's Quantum Biopharma Class B Subordinate Voting Shares position peaked at $48.6K in Q1 2026.
  • 26 funds tracked by Wall St. Rank held Quantum Biopharma Class B Subordinate Voting Shares as of Q2 2026.

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