Vanguard Group’s Prothena Corp PRTA Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q4 | $20.4M | Buy |
2,140,909
+91,060
| +4% | +$927K | ﹤0.01% | 2608 |
|
|
2025
Q3 | $20M | Sell |
2,049,849
-126,378
| -6% | -$971K | ﹤0.01% | 2626 |
|
|
2025
Q2 | $13.2M | Buy |
2,176,227
+906,956
| +71% | +$6.81M | ﹤0.01% | 2756 |
|
|
2025
Q1 | $15.7M | Sell |
1,269,271
-134,567
| -10% | -$1.9M | ﹤0.01% | 2618 |
|
|
2024
Q4 | $19.4M | Buy |
1,403,838
+144,737
| +11% | +$2.28M | ﹤0.01% | 2602 |
|
|
2024
Q3 | $21.1M | Buy |
1,259,101
+87,354
| +7% | +$1.88M | ﹤0.01% | 2572 |
|
|
2024
Q2 | $24.2M | Buy |
1,171,747
+46,464
| +4% | +$1.01M | ﹤0.01% | 2470 |
|
|
2024
Q1 | $27.9M | Buy |
1,125,283
+54,728
| +5% | +$1.63M | ﹤0.01% | 2431 |
|
|
2023
Q4 | $38.9M | Buy |
1,070,555
+39,781
| +4% | +$1.53M | ﹤0.01% | 2289 |
|
|
2023
Q3 | $49.7M | Sell |
1,030,774
-9,907
| -1% | -$589K | ﹤0.01% | 2141 |
|
|
2023
Q2 | $71.1M | Buy |
1,040,681
+96,125
| +10% | +$6.2M | ﹤0.01% | 2036 |
|
|
2023
Q1 | $45.8M | Buy |
944,556
+74,422
| +9% | +$3.93M | ﹤0.01% | 2214 |
|
|
2022
Q4 | $52.4M | Buy |
870,134
+62,174
| +8% | +$3.64M | ﹤0.01% | 2162 |
|
|
2022
Q3 | $49M | Sell |
807,960
-21,116
| -3% | -$668K | ﹤0.01% | 2197 |
|
|
2022
Q2 | $22.5M | Sell |
829,076
-46,224
| -5% | -$1.35M | ﹤0.01% | 2582 |
|
|
2022
Q1 | $32M | Sell |
875,300
-25,904
| -3% | -$934K | ﹤0.01% | 2537 |
|
|
2021
Q4 | $44.5M | Buy |
901,204
+32,726
| +4% | +$1.81M | ﹤0.01% | 2414 |
|
|
2021
Q3 | $61.9M | Buy |
868,478
+187,382
| +28% | +$11.6M | ﹤0.01% | 2240 |
|
|
2021
Q2 | $35M | Buy |
681,096
+109,420
| +19% | +$3.41M | ﹤0.01% | 2556 |
|
|
2021
Q1 | $14.4M | Sell |
571,676
-32,135
| -5% | -$605K | ﹤0.01% | 2958 |
|
|
2020
Q4 | $7.25M | Buy |
603,811
+29,664
| +5% | +$351K | ﹤0.01% | 3161 |
|
|
2020
Q3 | $5.74M | Sell |
574,147
-199,075
| -26% | -$2.39M | ﹤0.01% | 3083 |
|
|
2020
Q2 | $8.09M | Sell |
773,222
-19,031
| -2% | -$211K | ﹤0.01% | 2870 |
|
|
2020
Q1 | $8.48M | Buy |
792,253
+23,756
| +3% | +$288K | ﹤0.01% | 2694 |
|
|
2019
Q4 | $12.2M | Sell |
768,497
-83,762
| -10% | -$898K | ﹤0.01% | 2765 |
|
|
2019
Q3 | $6.68M | Buy |
852,259
+38,883
| +5% | +$345K | ﹤0.01% | 3025 |
|
|
2019
Q2 | $8.6M | Buy |
813,376
+5,817
| +0.7% | +$59.7K | ﹤0.01% | 2947 |
|
|
2019
Q1 | $9.8M | Buy |
807,559
+113,902
| +16% | +$1.42M | ﹤0.01% | 2835 |
|
|
2018
Q4 | $7.14M | Sell |
693,657
-74,778
| -10% | -$889K | ﹤0.01% | 2932 |
|
|
2018
Q3 | $10.1M | Sell |
768,435
-296,580
| -28% | -$4.28M | ﹤0.01% | 2916 |
|
|
2018
Q2 | $15.5M | Buy |
1,065,015
+316,411
| +42% | +$6.25M | ﹤0.01% | 2687 |
|
|
2018
Q1 | $27.5M | Buy |
748,604
+9,935
| +1% | +$361K | ﹤0.01% | 2368 |
|
|
2017
Q4 | $27.7M | Buy |
738,669
+6,471
| +0.9% | +$329K | ﹤0.01% | 2357 |
|
|
2017
Q3 | $47.4M | Buy |
732,198
+19,114
| +3% | +$1.17M | ﹤0.01% | 2069 |
|
|
2017
Q2 | $38.6M | Buy |
713,084
+13,226
| +2% | +$705K | ﹤0.01% | 2148 |
|
|
2017
Q1 | $39M | Buy |
699,858
+97,631
| +16% | +$5.13M | ﹤0.01% | 2123 |
|
|
2016
Q4 | $29.6M | Buy |
602,227
+10,348
| +2% | +$571K | ﹤0.01% | 2226 |
|
|
2016
Q3 | $35.5M | Buy |
591,879
+8,073
| +1% | +$433K | ﹤0.01% | 2090 |
|
|
2016
Q2 | $20.4M | Buy |
583,806
+15,722
| +3% | +$685K | ﹤0.01% | 2325 |
|
|
2016
Q1 | $23.4M | Buy |
568,084
+48,050
| +9% | +$1.88M | ﹤0.01% | 2231 |
|
|
2015
Q4 | $35.4M | Buy |
520,034
+10,642
| +2% | +$642K | ﹤0.01% | 2040 |
|
|
2015
Q3 | $23.1M | Buy |
509,392
+48,909
| +11% | +$2.85M | ﹤0.01% | 2223 |
|
|
2015
Q2 | $24.3M | Buy |
460,483
+66,838
| +17% | +$2.64M | ﹤0.01% | 2270 |
|
|
2015
Q1 | $15M | Buy |
393,645
+18,392
| +5% | +$472K | ﹤0.01% | 2453 |
|
|
2014
Q4 | $7.79M | Sell |
375,253
-26,973
| -7% | -$563K | ﹤0.01% | 2656 |
|
|
2014
Q3 | $8.91M | Buy |
402,226
+45,110
| +13% | +$956K | ﹤0.01% | 2546 |
|
|
2014
Q2 | $8.05M | Buy |
357,116
+114,459
| +47% | +$2.86M | ﹤0.01% | 2606 |
|
|
2014
Q1 | $9.3M | Buy |
242,657
+74,387
| +44% | +$2.4M | ﹤0.01% | 2530 |
|
|
2013
Q4 | $4.46M | Buy |
168,270
+49,036
| +41% | +$1.23M | ﹤0.01% | 2862 |
|
|
2013
Q3 | $2.41M | Buy |
119,234
+90,974
| +322% | +$1.61M | ﹤0.01% | 3062 |
|
|
2013
Q2 | $365K | Buy |
+28,260
| New | +$263K | ﹤0.01% | 3547 |
|
Other funds holding PRTA
RCMNY
AC
ACM
PAI
Vanguard Group's PRTA Position: Q4 2025 in Review
Vanguard Group increased its Prothena Corp (PRTA) stake by 4.4% in Q4 2025, buying an estimated $927K and bringing the position to 2,140,909 shares worth $20.4M. The position accounts for ﹤0.01% of the portfolio, ranked #2608.
Vanguard Group first reported a position in PRTA in Q2 2013 and has held it in 51 quarters since. The position peaked at $71.1M in Q2 2023. 181 funds tracked by Wall St. Rank hold PRTA as of Q4 2025.
- Vanguard Group held 2,140,909 shares of Prothena Corp worth $20.4M as of Q4 2025.
- Vanguard Group bought 91,060 Prothena Corp shares in Q4 2025, an estimated $927K.
- Prothena Corp made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #2608 holding.
- Vanguard Group first reported a position in Prothena Corp in Q2 2013 and has held it in 51 quarters since.
- Vanguard Group's Prothena Corp position peaked at $71.1M in Q2 2023.
- 181 funds tracked by Wall St. Rank held Prothena Corp as of Q4 2025.
Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.