Millennium Management
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Millennium Management’s Ecovyst ECVT Stock Holding History

Millennium Management’s Portfolio ECVT Stock Details ECVT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$738K Sell
59,276
-69,945
-54% -$948K ﹤0.01% 4526
2026
Q1 		$1.66M Buy
+129,221
New +$1.46M ﹤0.01% 4036
2025
Q3 		– Sell
-1,417,306
Closed -$11.7M – 6107
2025
Q2 		$11.7M Buy
1,417,306
+891,293
+169% +$6.26M 0.01% 2100
2025
Q1 		$3.26M Buy
526,013
+242,807
+86% +$1.8M ﹤0.01% 3305
2024
Q4 		$2.16M Buy
+283,206
New +$2.09M ﹤0.01% 3580
2024
Q3 		– Sell
-55,286
Closed -$496K – 6176
2024
Q2 		$496K Sell
55,286
-442,576
-89% -$4.28M ﹤0.01% 4592
2024
Q1 		$5.55M Sell
497,862
-14,737
-3% -$139K ﹤0.01% 2759
2023
Q4 		$5.01M Buy
512,599
+456,444
+813% +$4.35M ﹤0.01% 2790
2023
Q3 		$553K Sell
56,155
-558,553
-91% -$5.97M ﹤0.01% 4595
2023
Q2 		$7.04M Sell
614,708
-215,663
-26% -$2.35M ﹤0.01% 2352
2023
Q1 		$9.18M Sell
830,371
-875,101
-51% -$9.05M 0.01% 2047
2022
Q4 		$15.1M Buy
1,705,472
+245,466
+17% +$2.26M 0.01% 1704
2022
Q3 		$12.3M Buy
1,460,006
+503,385
+53% +$4.79M 0.01% 1888
2022
Q2 		$9.42M Sell
956,621
-596,910
-38% -$6.2M 0.01% 2108
2022
Q1 		$18M Buy
1,553,531
+274,397
+21% +$2.88M 0.01% 1498
2021
Q4 		$13.1M Buy
1,279,134
+1,052,756
+465% +$11.5M 0.01% 1854
2021
Q3 		$2.64M Buy
226,378
+2,851
+1% +$38.9K ﹤0.01% 3585
2021
Q2 		$3.43M Buy
223,527
+117,608
+111% +$1.86M ﹤0.01% 3270
2021
Q1 		$1.77M Buy
105,919
+91,047
+612% +$1.45M ﹤0.01% 3650
2020
Q4 		$212K Sell
14,872
-41,124
-73% -$522K ﹤0.01% 4771
2020
Q3 		$575K Sell
55,996
-114,204
-67% -$1.39M ﹤0.01% 3507
2020
Q2 		$2.25M Buy
+170,200
New +$2M ﹤0.01% 2434
2019
Q3 		– Sell
-27,945
Closed -$443K – 4249
2019
Q2 		$443K Buy
+27,945
New +$440K ﹤0.01% 3318
2018
Q4 		– Sell
-57,658
Closed -$1.01M – 3832
2018
Q3 		$1.01M Buy
+57,658
New +$1.02M ﹤0.01% 2872
2017
Q4 		– Sell
-1,076,252
Closed -$18.6M – 3847
2017
Q3 		$18.6M Buy
+1,076,252
New +$18.6M 0.03% 838

Other funds holding ECVT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Brown Advisory
Brown Advisory Baltimore, Maryland $64.6B AUM 18.98% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Millennium Management's ECVT Position: Q2 2026 in Review

Millennium Management reduced its Ecovyst (ECVT) stake by 54% in Q2 2026, selling an estimated $948K and leaving 59,276 shares worth $738K. The position accounts for ﹤0.01% of the portfolio, ranked #4526.

Millennium Management first reported a position in ECVT in Q3 2017 and has held it in 25 quarters since. The position peaked at $18.6M in Q3 2017. 209 funds tracked by Wall St. Rank hold ECVT as of Q2 2026.

  • Millennium Management held 59,276 shares of Ecovyst worth $738K as of Q2 2026.
  • Millennium Management sold 69,945 Ecovyst shares in Q2 2026, an estimated $948K.
  • Ecovyst made up ﹤0.01% of Millennium Management's portfolio in Q2 2026, its #4526 holding.
  • Millennium Management first reported a position in Ecovyst in Q3 2017 and has held it in 25 quarters since.
  • Millennium Management's Ecovyst position peaked at $18.6M in Q3 2017.
  • 209 funds tracked by Wall St. Rank held Ecovyst as of Q2 2026.

Based on Millennium Management's 13F filing for Q2 2026, filed 14 Aug 2026.