EC
THRD

EcoR1 Capital’s Third Harmonic Bio THRD Stock Holding History

EcoR1 Capital’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
Q1 		– Sell
-3,182,444
Closed -$32.7M – 62
2024
Q4 		$32.7M Hold
3,182,444
– – 1.24% 18
2024
Q3 		$43.1M Hold
3,182,444
– – 1.48% 18
2024
Q2 		$41.4M Hold
3,182,444
– – 1.27% 21
2024
Q1 		$30M Hold
3,182,444
– – 0.76% 25
2023
Q4 		$34.9M Buy
3,182,444
+200,000
+7% +$1.58M 0.91% 21
2023
Q3 		$19.1M Buy
2,982,444
+893,664
+43% +$5.46M 0.64% 30
2023
Q2 		$10M Buy
2,088,780
+286,658
+16% +$1.36M 0.25% 33
2023
Q1 		$7.42M Buy
+1,802,122
New +$7.65M 0.24% 35

Other funds holding THRD

AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $881M AUM 160.77% 1-Year Est. Return
O
OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return
BCM
BML Capital Management Zionsville, Indiana $176M AUM 123.21% 1-Year Est. Return
NCM
Nantahala Capital Management New Canaan, Connecticut $3.01B AUM 119.46% 1-Year Est. Return
TCM
TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.91B AUM 304.52% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $2.2B AUM 156.35% 1-Year Est. Return
NM
Newtyn Management New York $801M AUM 23.14% 1-Year Est. Return

EcoR1 Capital's THRD Position: Q1 2025 in Review

EcoR1 Capital sold out of Third Harmonic Bio (THRD) in Q1 2025, closing a stake of 3,182,444 shares — an estimated $32.7M sold.

EcoR1 Capital first reported a position in THRD in Q1 2023 and held it in 8 quarters. The position peaked at $43.1M in Q3 2024. 100 funds tracked by Wall St. Rank hold THRD as of Q1 2025.

  • EcoR1 Capital reported no remaining Third Harmonic Bio position as of Q1 2025 after selling out during the quarter.
  • EcoR1 Capital sold 3,182,444 Third Harmonic Bio shares in Q1 2025, an estimated $32.7M.
  • EcoR1 Capital first reported a position in Third Harmonic Bio in Q1 2023 and held it in 8 quarters.
  • EcoR1 Capital's Third Harmonic Bio position peaked at $43.1M in Q3 2024.
  • 100 funds tracked by Wall St. Rank held Third Harmonic Bio as of Q1 2025.

Based on EcoR1 Capital's 13F filing for Q1 2025, filed 15 May 2025.