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
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 		$575 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

RCMNY
Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $32.4B AUM 17.21% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Brown Advisory
Brown Advisory Baltimore, Maryland $60.9B AUM 15.24% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $59.7B AUM 29.08% 1-Year Est. Return

Millennium Management's ECVT Position: Q1 2026 in Review

Millennium Management opened a new position in Ecovyst (ECVT) in Q1 2026: 129,221 shares worth $1.66M. The stake represents ﹤0.01% of the portfolio and ranks #4036 among its holdings. This is a return to the name: Millennium Management previously reported a position in ECVT as recently as Q2 2025.

Millennium Management first reported a position in ECVT in Q3 2017 and has held it in 24 quarters since. The position peaked at $18.6M in Q3 2017. 197 funds tracked by Wall St. Rank hold ECVT as of Q1 2026.

  • Millennium Management held 129,221 shares of Ecovyst worth $1.66M as of Q1 2026.
  • Ecovyst was a new Millennium Management position in Q1 2026.
  • Ecovyst made up ﹤0.01% of Millennium Management's portfolio in Q1 2026, its #4036 holding.
  • Millennium Management first reported a position in Ecovyst in Q3 2017 and has held it in 24 quarters since.
  • Millennium Management's Ecovyst position peaked at $18.6M in Q3 2017.
  • 197 funds tracked by Wall St. Rank held Ecovyst as of Q1 2026.

Based on Millennium Management's 13F filing for Q1 2026, filed 15 May 2026.