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Portolan Capital Management’s Pulse Biosciences PLSE Stock Holding History

Portolan Capital Management’s Portfolio PLSE Stock Details PLSE Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$20.9M Buy
753,333
+19,961
+3% +$471K 0.78% 44
2026
Q1 		$15.8M Buy
733,372
+339,873
+86% +$6.27M 0.84% 40
2025
Q4 		$5.4M Buy
393,499
+291,302
+285% +$4.54M 0.29% 102
2025
Q3 		$1.81M Buy
+102,197
New +$1.62M 0.1% 108

Other funds holding PLSE

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $80.2B AUM 51.53% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Portolan Capital Management's PLSE Position: Q2 2026 in Review

Portolan Capital Management increased its Pulse Biosciences (PLSE) stake by 2.7% in Q2 2026, buying an estimated $471K and bringing the position to 753,333 shares worth $20.9M. The position accounts for 0.78% of the portfolio, ranked #44.

Portolan Capital Management first reported a position in PLSE in Q3 2025 and has held it in 4 quarters since. 106 funds tracked by Wall St. Rank hold PLSE as of Q2 2026.

  • Portolan Capital Management held 753,333 shares of Pulse Biosciences worth $20.9M as of Q2 2026.
  • Portolan Capital Management bought 19,961 Pulse Biosciences shares in Q2 2026, an estimated $471K.
  • Pulse Biosciences made up 0.78% of Portolan Capital Management's portfolio in Q2 2026, its #44 holding.
  • Portolan Capital Management first reported a position in Pulse Biosciences in Q3 2025 and has held it in 4 quarters since.
  • 106 funds tracked by Wall St. Rank held Pulse Biosciences as of Q2 2026.

Based on Portolan Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.