Parallax Volatility Advisers’s Western Digital WDC Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $39.6M | Sell |
146,400
-85,300
| -37% | -$22.3M | 0.1% | 139 |
|
|
2025
Q4 | $39.9M | Sell |
231,700
-90,700
| -28% | -$13.8M | 0.08% | 183 |
|
|
2025
Q3 | $38.7M | Buy |
322,400
+130,700
| +68% | +$10.7M | 0.06% | 178 |
|
|
2025
Q2 | $12.3M | Sell |
191,700
-92,700
| -33% | -$4.41M | 0.03% | 371 |
|
|
2025
Q1 | $11.5M | Sell |
284,400
-96,756
| -25% | -$4.59M | 0.03% | 422 |
|
|
2024
Q4 | $17.2M | Sell |
381,156
-6,615
| -2% | -$333K | 0.03% | 385 |
|
|
2024
Q3 | $20M | Buy |
387,771
+64,033
| +20% | +$3.24M | 0.04% | 339 |
|
|
2024
Q2 | $18.5M | Buy |
+323,738
| New | +$18M | 0.04% | 315 |
|
|
2024
Q1 | – | Sell |
-140,503
| Closed | -$5.56M | – | 2416 |
|
|
2023
Q4 | $5.56M | Buy |
140,503
+33,869
| +32% | +$1.19M | 0.01% | 799 |
|
|
2023
Q3 | $3.68M | Buy |
106,634
+42,204
| +66% | +$1.33M | 0.01% | 883 |
|
|
2023
Q2 | $1.85M | Sell |
64,430
-542,033
| -89% | -$15.1M | ﹤0.01% | 1170 |
|
|
2023
Q1 | $17.3M | Sell |
606,463
-264,997
| -30% | -$7.77M | 0.04% | 416 |
|
|
2022
Q4 | $20.8M | Buy |
871,460
+196,333
| +29% | +$5.18M | 0.03% | 521 |
|
|
2022
Q3 | $16.6M | Buy |
675,127
+194,349
| +40% | +$6.45M | 0.03% | 569 |
|
|
2022
Q2 | $16.3M | Buy |
480,778
+255,736
| +114% | +$10.3M | 0.02% | 549 |
|
|
2022
Q1 | $8.45M | Buy |
225,042
+100,151
| +80% | +$4.11M | ﹤0.01% | 805 |
|
|
2021
Q4 | $6.16M | Sell |
124,891
-8,600
| -6% | -$374K | 0.01% | 737 |
|
|
2021
Q3 | $5.7M | Sell |
133,491
-17,331
| -11% | -$823K | 0.01% | 800 |
|
|
2021
Q2 | $8.11M | Sell |
150,822
-1,152,598
| -88% | -$62.3M | 0.01% | 551 |
|
|
2021
Q1 | $65.8M | Buy |
1,303,420
+677,906
| +108% | +$31.7M | 0.15% | 113 |
|
|
2020
Q4 | $26.2M | Sell |
625,514
-723,152
| -54% | -$24M | 0.03% | 458 |
|
|
2020
Q3 | $37.3M | Buy |
1,348,666
+908,636
| +206% | +$27M | 0.03% | 494 |
|
|
2020
Q2 | $14.7M | Buy |
440,030
+75,543
| +21% | +$2.45M | 0.02% | 620 |
|
|
2020
Q1 | $11.5M | Sell |
364,487
-11,642
| -3% | -$516K | 0.01% | 555 |
|
|
2019
Q4 | $18M | Sell |
376,129
-406,822
| -52% | -$17M | 0.02% | 455 |
|
|
2019
Q3 | $35.3M | Sell |
782,951
-606,067
| -44% | -$25.9M | 0.04% | 245 |
|
|
2019
Q2 | $49.9M | Sell |
1,389,018
-211,283
| -13% | -$7.24M | 0.05% | 180 |
|
|
2019
Q1 | $58.1M | Buy |
1,600,301
+746,172
| +87% | +$25.5M | 0.07% | 139 |
|
|
2018
Q4 | $23.9M | Buy |
854,129
+738,234
| +637% | +$26.2M | 0.03% | 307 |
|
|
2018
Q3 | $5.13M | Buy |
115,895
+83,217
| +255% | +$4.22M | 0.01% | 700 |
|
|
2018
Q2 | $1.91M | Sell |
32,678
-50,539
| -61% | -$3.22M | ﹤0.01% | 927 |
|
|
2018
Q1 | $5.8M | Sell |
83,217
-86,921
| -51% | -$5.85M | 0.01% | 480 |
|
|
2017
Q4 | $10.2M | Buy |
170,138
+40,219
| +31% | +$2.59M | 0.01% | 407 |
|
|
2017
Q3 | $8.48M | Buy |
129,919
+66,150
| +104% | +$4.39M | 0.01% | 446 |
|
|
2017
Q2 | $4.27M | Buy |
63,769
+21,830
| +52% | +$1.45M | 0.01% | 606 |
|
|
2017
Q1 | $2.62M | Buy |
41,939
+31,620
| +306% | +$1.82M | 0.01% | 775 |
|
|
2016
Q4 | $530K | Sell |
10,319
-112,852
| -92% | -$5.2M | ﹤0.01% | 1483 |
|
|
2016
Q3 | $5.44M | Buy |
123,171
+85,995
| +231% | +$3.24M | 0.01% | 640 |
|
|
2016
Q2 | $1.33M | Buy |
37,176
+21,300
| +134% | +$701K | ﹤0.01% | 1078 |
|
|
2016
Q1 | $567K | Buy |
15,876
+9,261
| +140% | +$331K | ﹤0.01% | 1409 |
|
|
2015
Q4 | $300K | Sell |
6,615
-39,293
| -86% | -$2.01M | ﹤0.01% | 1740 |
|
|
2015
Q3 | $2.76M | Sell |
45,908
-299,395
| -87% | -$18M | 0.01% | 875 |
|
|
2015
Q2 | $20.5M | Buy |
345,303
+27,254
| +9% | +$1.95M | 0.04% | 285 |
|
|
2015
Q1 | $21.9M | Buy |
318,049
+207,578
| +188% | +$16.2M | 0.05% | 292 |
|
|
2014
Q4 | $9.24M | Sell |
110,471
-126,346
| -53% | -$9.54M | 0.03% | 489 |
|
|
2014
Q3 | $17.4M | Buy |
236,817
+90,625
| +62% | +$6.81M | 0.06% | 301 |
|
|
2014
Q2 | $10.2M | Buy |
146,192
+145,663
| +27,536% | +$9.76M | 0.04% | 308 |
|
|
2014
Q1 | $37K | Sell |
529
-15,479
| -97% | -$1.01M | ﹤0.01% | 2478 |
|
|
2013
Q4 | $1.01M | Buy |
16,008
+14,950
| +1,413% | +$835K | ﹤0.01% | 841 |
|
|
2013
Q3 | $50K | Sell |
1,058
-1,456
| -58% | -$71.9K | ﹤0.01% | 1811 |
|
|
2013
Q2 | $118K | Buy |
+2,514
| New | +$110K | ﹤0.01% | 1216 |
|
Other funds holding WDC
VCM
VPM
Parallax Volatility Advisers's WDC Position: Q1 2026 in Review
Parallax Volatility Advisers reduced its Western Digital (WDC) stake by 30% in Q1 2026, selling an estimated $7.51M and leaving 68,462 shares worth $18.5M. The position accounts for 0.05% of the portfolio, ranked #263.
Parallax Volatility Advisers first reported a position in WDC in Q2 2013 and has held it in 44 quarters since. The position peaked at $34.5M in Q3 2021. 1,406 funds tracked by Wall St. Rank hold WDC as of Q1 2026.
- Parallax Volatility Advisers held 68,462 shares of Western Digital worth $18.5M as of Q1 2026.
- Parallax Volatility Advisers sold 28,755 Western Digital shares in Q1 2026, an estimated $7.51M.
- Western Digital made up 0.05% of Parallax Volatility Advisers's portfolio in Q1 2026, its #263 holding.
- Parallax Volatility Advisers first reported a position in Western Digital in Q2 2013 and has held it in 44 quarters since.
- Parallax Volatility Advisers's Western Digital position peaked at $34.5M in Q3 2021.
- 1,406 funds tracked by Wall St. Rank held Western Digital as of Q1 2026.
Based on Parallax Volatility Advisers's 13F filing for Q1 2026, filed 15 May 2026.