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Potomac Fund Management’s Thermo Fisher Scientific TMO Stock Holding History

Potomac Fund Management’s Portfolio TMO Stock Details TMO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q2 		– Sell
-482
Closed -$203K – 100
2025
Q1 		$203K Buy
482
+52
+12% +$28.2K 0.09% 72
2024
Q4 		$224K Buy
+430
New +$236K 0.01% 94

Other funds holding TMO

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $935B AUM
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

Potomac Fund Management's TMO Position: Q2 2025 in Review

Potomac Fund Management sold out of Thermo Fisher Scientific (TMO) in Q2 2025, closing a stake of 482 shares — an estimated $203K sold.

Potomac Fund Management first reported a position in TMO in Q4 2024 and held it in 2 quarters. The position peaked at $224K in Q4 2024. 2,454 funds tracked by Wall St. Rank hold TMO as of Q2 2025.

  • Potomac Fund Management reported no remaining Thermo Fisher Scientific position as of Q2 2025 after selling out during the quarter.
  • Potomac Fund Management sold 482 Thermo Fisher Scientific shares in Q2 2025, an estimated $203K.
  • Potomac Fund Management first reported a position in Thermo Fisher Scientific in Q4 2024 and held it in 2 quarters.
  • Potomac Fund Management's Thermo Fisher Scientific position peaked at $224K in Q4 2024.
  • 2,454 funds tracked by Wall St. Rank held Thermo Fisher Scientific as of Q2 2025.

Based on Potomac Fund Management's 13F filing for Q2 2025, filed 14 Aug 2025.