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Portolan Capital Management’s Graham Corp GHM Stock Holding History

Portolan Capital Management’s Portfolio GHM Stock Details GHM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$16.9M Buy
136,925
+33,369
+32% +$3.31M 0.63% 56
2026
Q1 		$8.17M Buy
+103,556
New +$8.11M 0.44% 69

Other funds holding GHM

BIP
Brandes Investment Partners La Jolla, California $14.3B AUM 23.11% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
RA
Royce & Associates New York $12.4B AUM 64.17% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
GI
GAMCO Investors Greenwich, Connecticut $11.1B AUM 41.79% 1-Year Est. Return

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

Portolan Capital Management increased its Graham Corp (GHM) stake by 32% in Q2 2026, buying an estimated $3.31M and bringing the position to 136,925 shares worth $16.9M. The position accounts for 0.63% of the portfolio, ranked #56.

Portolan Capital Management first reported a position in GHM in Q1 2026 and has held it in 2 quarters since. 222 funds tracked by Wall St. Rank hold GHM as of Q2 2026.

  • Portolan Capital Management held 136,925 shares of Graham Corp worth $16.9M as of Q2 2026.
  • Portolan Capital Management bought 33,369 Graham Corp shares in Q2 2026, an estimated $3.31M.
  • Graham Corp made up 0.63% of Portolan Capital Management's portfolio in Q2 2026, its #56 holding.
  • Portolan Capital Management first reported a position in Graham Corp in Q1 2026 and has held it in 2 quarters since.
  • 222 funds tracked by Wall St. Rank held Graham Corp as of Q2 2026.

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