Fidelity Investments
YMAB

Fidelity Investments’s Y-mAbs Therapeutics YMAB Stock Holding History

Fidelity Investments’s Portfolio YMAB Stock Details YMAB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-30,868
Closed -$139K – 5603
2025
Q2 		$139K Buy
30,868
+1,607
+5% +$7.22K ﹤0.01% 3468
2025
Q1 		$130K Sell
29,261
-22,461
-43% -$130K ﹤0.01% 3444
2024
Q4 		$405K Buy
51,722
+15,306
+42% +$186K ﹤0.01% 3004
2024
Q3 		$479K Buy
36,416
+6,822
+23% +$86.5K ﹤0.01% 2872
2024
Q2 		$357K Buy
29,594
+1,628
+6% +$22K ﹤0.01% 2843
2024
Q1 		$455K Sell
27,966
-8,876
-24% -$120K ﹤0.01% 2756
2023
Q4 		$251K Buy
36,842
+767
+2% +$4.44K ﹤0.01% 2891
2023
Q3 		$197K Sell
36,075
-897
-2% -$5.22K ﹤0.01% 2895
2023
Q2 		$251K Buy
36,972
+35,662
+2,722% +$267K ﹤0.01% 2882
2023
Q1 		$6.56K Buy
1,310
+108
+9% +$441 ﹤0.01% 4294
2022
Q4 		$5.87K Sell
1,202
-1,377,264
-100% -$10M ﹤0.01% 4200
2022
Q3 		$19.9M Sell
1,378,466
-592,385
-30% -$9.81M ﹤0.01% 1611
2022
Q2 		$29.8M Buy
1,970,851
+583
+0% +$6.8K ﹤0.01% 1484
2022
Q1 		$23.4M Buy
1,970,268
+444,481
+29% +$4.56M ﹤0.01% 1714
2021
Q4 		$24.7M Hold
1,525,787
– – ﹤0.01% 1729
2021
Q3 		$43.5M Sell
1,525,787
-23,200
-1% -$731K ﹤0.01% 1469
2021
Q2 		$52.4M Hold
1,548,987
– – ﹤0.01% 1405
2021
Q1 		$46.8M Buy
1,548,987
+541,813
+54% +$22.2M ﹤0.01% 1436
2020
Q4 		$49.9M Sell
1,007,174
-107,468
-10% -$4.97M ﹤0.01% 1325
2020
Q3 		$42.8M Sell
1,114,642
-196,100
-15% -$7.8M ﹤0.01% 1252
2020
Q2 		$56.6M Sell
1,310,742
-80,100
-6% -$3.03M 0.01% 1113
2020
Q1 		$36.3M Sell
1,390,842
-219
-0% -$6.36K 0.01% 1151
2019
Q4 		$43.5M Sell
1,391,061
-235,581
-14% -$6.97M ﹤0.01% 1264
2019
Q3 		$42.4M Hold
1,626,642
– – 0.01% 1240
2019
Q2 		$37.2M Hold
1,626,642
– – ﹤0.01% 1359
2019
Q1 		$42.6M Hold
1,626,642
– – 0.01% 1280
2018
Q4 		$33.1M Buy
1,626,642
+396,000
+32% +$9.09M ﹤0.01% 1343
2018
Q3 		$32.7M Buy
+1,230,642
New +$31.3M ﹤0.01% 1480

Other funds holding YMAB

BIG
Brooklyn Investment Group Brooklyn, New York $3.2B AUM 26.32% 1-Year Est. Return
IA
IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return

Fidelity Investments's YMAB Position: Q3 2025 in Review

Fidelity Investments sold out of Y-mAbs Therapeutics (YMAB) in Q3 2025, closing a stake of 30,868 shares — an estimated $139K sold.

Fidelity Investments first reported a position in YMAB in Q3 2018 and held it in 28 quarters. The position peaked at $56.6M in Q2 2020. 2 funds tracked by Wall St. Rank hold YMAB as of Q3 2025.

  • Fidelity Investments reported no remaining Y-mAbs Therapeutics position as of Q3 2025 after selling out during the quarter.
  • Fidelity Investments sold 30,868 Y-mAbs Therapeutics shares in Q3 2025, an estimated $139K.
  • Fidelity Investments first reported a position in Y-mAbs Therapeutics in Q3 2018 and held it in 28 quarters.
  • Fidelity Investments's Y-mAbs Therapeutics position peaked at $56.6M in Q2 2020.
  • 2 funds tracked by Wall St. Rank held Y-mAbs Therapeutics as of Q3 2025.

Based on Fidelity Investments's 13F filing for Q3 2025, filed 13 Nov 2025.