BlackRock
THRD

BlackRock’s Third Harmonic Bio THRD Stock Holding History

BlackRock’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
Q3 		– Sell
-1,726,614
Closed -$9.38M – 5601
2025
Q2 		$9.38M Buy
1,726,614
+246,996
+17% +$1.23M ﹤0.01% 3449
2025
Q1 		$5.13M Buy
1,479,618
+1,225
+0.1% +$5.94K ﹤0.01% 3637
2024
Q4 		$15.2M Buy
1,478,393
+20,154
+1% +$251K ﹤0.01% 3204
2024
Q3 		$19.8M Buy
1,458,239
+30,169
+2% +$374K ﹤0.01% 3054
2024
Q2 		$18.6M Buy
1,428,070
+65,778
+5% +$814K ﹤0.01% 3031
2024
Q1 		$12.9M Sell
1,362,292
-26,886
-2% -$261K ﹤0.01% 3221
2023
Q4 		$15.2M Buy
1,389,178
+232,059
+20% +$1.84M ﹤0.01% 3157
2023
Q3 		$7.39M Buy
1,157,119
+82,549
+8% +$505K ﹤0.01% 3495
2023
Q2 		$5.17M Buy
1,074,570
+348,845
+48% +$1.66M ﹤0.01% 3718
2023
Q1 		$2.99M Sell
725,725
-23,023
-3% -$97.8K ﹤0.01% 3867
2022
Q4 		$3.22M Buy
+748,748
New +$12.5M ﹤0.01% 3923

Other funds holding THRD

Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
CF
Cantor Fitzgerald New York $6.78B AUM 29.01% 1-Year Est. Return
RhumbLine Advisers
RhumbLine Advisers Boston, Massachusetts $117B AUM 29.66% 1-Year Est. Return
MIM
MetLife Investment Management Whippany, New Jersey $19.6B AUM 32.64% 1-Year Est. Return
JC
JBF Capital Aspen, Colorado $676M AUM 24.74% 1-Year Est. Return
Russell Investments Group
Russell Investments Group London, United Kingdom $93.1B AUM 28.26% 1-Year Est. Return
AB
Amalgamated Bank New York $14.5B AUM 44.3% 1-Year Est. Return
GI
GAMMA Investing Foster City, California $2.69B AUM 42.78% 1-Year Est. Return
Optiver Holding
Optiver Holding Amsterdam, Netherlands $289B AUM 33.63% 1-Year Est. Return
N
Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

BlackRock's THRD Position: Q3 2025 in Review

BlackRock sold out of Third Harmonic Bio (THRD) in Q3 2025, closing a stake of 1,726,614 shares — an estimated $9.38M sold.

BlackRock first reported a position in THRD in Q4 2022 and held it in 11 quarters. The position peaked at $19.8M in Q3 2024. 18 funds tracked by Wall St. Rank hold THRD as of Q3 2025.

  • BlackRock reported no remaining Third Harmonic Bio position as of Q3 2025 after selling out during the quarter.
  • BlackRock sold 1,726,614 Third Harmonic Bio shares in Q3 2025, an estimated $9.38M.
  • BlackRock first reported a position in Third Harmonic Bio in Q4 2022 and held it in 11 quarters.
  • BlackRock's Third Harmonic Bio position peaked at $19.8M in Q3 2024.
  • 18 funds tracked by Wall St. Rank held Third Harmonic Bio as of Q3 2025.

Based on BlackRock's 13F filing for Q3 2025, filed 12 Nov 2025.