Marshall Wace’s Westlake Corp WLK Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q4 | – | Sell |
-56,461
| Closed | -$4.35M | – | 3539 |
|
|
2025
Q3 | $4.35M | Buy |
56,461
+48,350
| +596% | +$4.03M | ﹤0.01% | 1241 |
|
|
2025
Q2 | $616K | Buy |
+8,111
| New | +$664K | ﹤0.01% | 2065 |
|
|
2025
Q1 | – | Sell |
-15,914
| Closed | -$1.82M | – | 3139 |
|
|
2024
Q4 | $1.82M | Sell |
15,914
-26,512
| -62% | -$3.45M | ﹤0.01% | 1478 |
|
|
2024
Q3 | $6.38M | Buy |
+42,426
| New | +$6.1M | 0.01% | 908 |
|
|
2022
Q4 | – | Sell |
-253,380
| Closed | -$22M | – | 3474 |
|
|
2022
Q3 | $22M | Buy |
+253,380
| New | +$24.3M | 0.05% | 428 |
|
|
2022
Q2 | – | Sell |
-88,325
| Closed | -$10.9M | – | 3903 |
|
|
2022
Q1 | $10.9M | Buy |
88,325
+84,338
| +2,115% | +$9.2M | 0.02% | 819 |
|
|
2021
Q4 | $388K | Sell |
3,987
-5,992
| -60% | -$584K | ﹤0.01% | 2930 |
|
|
2021
Q3 | $910K | Sell |
9,979
-5,958
| -37% | -$510K | ﹤0.01% | 2074 |
|
|
2021
Q2 | $1.44M | Sell |
15,937
-105,023
| -87% | -$10.2M | 0.01% | 1629 |
|
|
2021
Q1 | $10.7M | Buy |
120,960
+110,595
| +1,067% | +$9.6M | 0.05% | 417 |
|
|
2020
Q4 | $845K | Buy |
+10,365
| New | +$774K | ﹤0.01% | 1277 |
|
|
2020
Q3 | – | Sell |
-92,404
| Closed | -$4.96M | – | 1963 |
|
|
2020
Q2 | $4.96M | Buy |
+92,404
| New | +$4.25M | 0.03% | 472 |
|
|
2019
Q1 | – | Sell |
-4,979
| Closed | -$329K | – | 2088 |
|
|
2018
Q4 | $329K | Buy |
+4,979
| New | +$360K | ﹤0.01% | 1206 |
|
|
2018
Q1 | – | Sell |
-2,553
| Closed | -$272K | – | 656 |
|
|
2017
Q4 | $272K | Buy |
+2,553
| New | +$237K | 0.01% | 355 |
|
|
2017
Q1 | – | Sell |
-184,659
| Closed | -$10.3M | – | 773 |
|
|
2016
Q4 | $10.3M | Sell |
184,659
-193,658
| -51% | -$10.6M | 0.07% | 324 |
|
|
2016
Q3 | $20.2M | Sell |
378,317
-355,265
| -48% | -$17.1M | 0.14% | 172 |
|
|
2016
Q2 | $31.5M | Buy |
733,582
+382,637
| +109% | +$17.5M | 0.26% | 90 |
|
|
2016
Q1 | $16.2M | Buy |
350,945
+13,728
| +4% | +$623K | 0.16% | 149 |
|
|
2015
Q4 | $18.3M | Sell |
337,217
-154,872
| -31% | -$8.97M | 0.17% | 143 |
|
|
2015
Q3 | $25.5M | Buy |
492,089
+49,270
| +11% | +$2.88M | 0.31% | 83 |
|
|
2015
Q2 | $30.4M | Buy |
442,819
+156,611
| +55% | +$11.4M | 0.4% | 69 |
|
|
2015
Q1 | $20.6M | Buy |
+286,208
| New | +$18.3M | 0.27% | 107 |
|
|
2014
Q3 | – | Sell |
-4,100
| Closed | -$343K | – | 1063 |
|
|
2014
Q2 | $343K | Sell |
4,100
-14,383
| -78% | -$1.08M | 0.01% | 729 |
|
|
2014
Q1 | $1.22M | Buy |
+18,483
| New | +$1.17M | 0.02% | 458 |
|
|
2013
Q2 | $5.21M | Buy |
+108,054
| New | +$4.86M | 0.31% | 55 |
|
Other funds holding WLK
OAG
BIP
Marshall Wace's WLK Position: Q4 2025 in Review
Marshall Wace sold out of Westlake Corp (WLK) in Q4 2025, closing a stake of 56,461 shares — an estimated $4.35M sold.
Marshall Wace first reported a position in WLK in Q2 2013 and held it in 25 quarters. The position peaked at $31.5M in Q2 2016. 296 funds tracked by Wall St. Rank hold WLK as of Q4 2025.
- Marshall Wace reported no remaining Westlake Corp position as of Q4 2025 after selling out during the quarter.
- Marshall Wace sold 56,461 Westlake Corp shares in Q4 2025, an estimated $4.35M.
- Marshall Wace first reported a position in Westlake Corp in Q2 2013 and held it in 25 quarters.
- Marshall Wace's Westlake Corp position peaked at $31.5M in Q2 2016.
- 296 funds tracked by Wall St. Rank held Westlake Corp as of Q4 2025.
Based on Marshall Wace's 13F filing for Q4 2025, filed 13 Feb 2026.