OBGC
THRD

O'Brien Greene & Co’s Third Harmonic Bio THRD Stock Holding History

O'Brien Greene & Co’s Portfolio THRD Stock Details THRD Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q2 		– Sell
-56,000
Closed -$194K – 145
2025
Q1 		$194K Buy
+56,000
New +$272K 0.07% 129

Other funds holding THRD

AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return
O
OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return
BCM
BML Capital Management Zionsville, Indiana $156M AUM 129.82% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $2.72B AUM 121.58% 1-Year Est. Return
TCM
TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $1.97B AUM 125.1% 1-Year Est. Return
SSA
Schonfeld Strategic Advisors New York $14.2B AUM 37.17% 1-Year Est. Return

O'Brien Greene & Co's THRD Position: Q2 2025 in Review

O'Brien Greene & Co sold out of Third Harmonic Bio (THRD) in Q2 2025, closing a stake of 56,000 shares — an estimated $194K sold.

O'Brien Greene & Co first reported a position in THRD in Q1 2025 and held it in 1 quarter. The position peaked at $194K in Q1 2025. 105 funds tracked by Wall St. Rank hold THRD as of Q2 2025.

  • O'Brien Greene & Co reported no remaining Third Harmonic Bio position as of Q2 2025 after selling out during the quarter.
  • O'Brien Greene & Co sold 56,000 Third Harmonic Bio shares in Q2 2025, an estimated $194K.
  • O'Brien Greene & Co first reported a position in Third Harmonic Bio in Q1 2025 and held it in 1 quarter.
  • O'Brien Greene & Co's Third Harmonic Bio position peaked at $194K in Q1 2025.
  • 105 funds tracked by Wall St. Rank held Third Harmonic Bio as of Q2 2025.

Based on O'Brien Greene & Co's 13F filing for Q2 2025, filed 6 Aug 2025.