Quanterix

QTRX

Market cap $187M

QTRX Hedge Fund Activity: Q1 2026 in Review

128 of the 8,127 institutional investors tracked by Wall St. Rank reported a position in Quanterix (QTRX) for Q1 2026, worth a combined $128M — down 42% from $223M a quarter earlier.

Sellers outnumbered buyers: 23 funds closed out of QTRX and 19 opened new positions — a net loss of 4 holders — while 36 trimmed existing stakes and 51 added.

The largest buyer was Levin Capital Strategies, opening a new position worth an estimated $8.55M. The largest seller was Portolan Capital Management, cutting an estimated $9.22M.

• 128 institutional investors held Quanterix (QTRX) as of Q1 2026, down from 134 in Q4 2025.
• Funds reported $128M of Quanterix stock for Q1 2026, down 42% quarter-over-quarter.
• 19 funds opened new Quanterix positions in Q1 2026 and 23 closed out, a net change of -4 holders.
• The largest Quanterix buyer in Q1 2026 was Levin Capital Strategies, an estimated $8.55M added.
• The largest Quanterix seller in Q1 2026 was Portolan Capital Management, an estimated $9.22M sold.

Based on aggregated 13F filings for Q1 2026.