ECVT in the 13F filings

Ecovyst Inc · CUSIP 27923Q109

Quarter

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q2 2023 Q2 2022 Q1 2022

Quarter end: 31 Dec 2025; the date the book describes
Filed: 19 Feb 2026; latest of these filings; the earliest 12 Feb 2026
Managers listing it: 17; at least, of 95 tracked, among listed positions
Comparable managers: 92; filed both Q3 2025 and Q4 2025; 1 listed it in both
Shares listed: 8,449,053; combined, among listed positions
Reported value: $82m; combined, at the quarter end

Among the 92 comparable managers: 8 buyers (opened or added shares) and 8 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,540,953.

Managers listing ECVT in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

17 of 17 holders

				Action		Filing
Oaktree Capital Management LP	4,254,503	$41m	0.59%	Added	+1,395,481	17 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP	1,393,092	$14m	under 0.1%	Added	+704,575	13 Feb 2026 (the filing on sec.gov)
Point72 Asset Management LP	1,282,667	$12m	under 0.1%	Added	+58,496	17 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	436,071	$4.2m	under 0.1%	Added	+229,394	17 Feb 2026 (the filing on sec.gov)
Invesco Ltd	273,358	$2.7m	under 0.1%	Trimmed	-78,339	19 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC	230,100	$2.2m	under 0.1%	Trimmed	-10,600	12 Feb 2026 (the filing on sec.gov)
AllianceBernstein LP	124,260	$1.2m	under 0.1%	Held	0	17 Feb 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	93,364	$909k	under 0.1%	Added	+4,500	17 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC	74,001	$720k	under 0.1%	Trimmed	-81,141	17 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC	60,003	$584k	under 0.1%	Added	+10,422	13 Feb 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP	53,786	$523k	under 0.1%	Trimmed	-76,398	17 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd	43,376	$422k	under 0.1%	Held	0	17 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP	36,200	$352k	under 0.1%	Added	+15,000	17 Feb 2026 (the filing on sec.gov)
Citadel Advisors LLC	28,787	$280k	under 0.1%	Trimmed	-1,933	17 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.	28,826	$280k	under 0.1%	Trimmed	-533,305	17 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC	20,949	$204k	under 0.1%	Trimmed	-82,410	12 Feb 2026 (the filing on sec.gov)
Susquehanna International Group LLP	15,710	$153k	under 0.1%	New	new	17 Feb 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, among managers that listed it in both quarters or opened it.

Increases

Oaktree Capital Management LPexisting position · 4,254,503 shares now+1,395,481
Arrowstreet Capital LPexisting position · 1,393,092 shares now+704,575
Fidelity (FMR LLC)existing position · 436,071 shares now+229,394
Point72 Asset Management LPexisting position · 1,282,667 shares now+58,496
Susquehanna International Group LLPnew position · 15,710 shares now+15,710

Reductions

D. E. Shaw & Co.existing position · 28,826 shares now-533,305
Jane Street Group LLCexisting position · 20,949 shares now-82,410
AQR Capital Management LLCexisting position · 74,001 shares now-81,141
Invesco Ltdexisting position · 273,358 shares now-78,339
Brevan Howard Capital Management LPexisting position · 53,786 shares now-76,398

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (1)

Susquehanna International Group LLP$153k

Exited (1)

Squarepoint Ops LLCwas $250k

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

1 in Q1 2022 to 2 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

ECVT and LIN →ECVT and GLW →ECVT and HWM →Choose a stock to compare with ECVT →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own ECVT, latest filings →Back to the 13F Explorer →

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Quarter	Holders	Reported value	Buyers	Sellers
Q1 2022	1	$851k	n.a.	n.a.
Q2 2022	1	$724k	n.a.	n.a.
Q2 2023	1	$25m	n.a.	n.a.
Q2 2025	1	$2.4m	1	0
Q3 2025	1	$25m	1	1
Q4 2025	1	$41m	8	8
Q1 2026	2	$93m	20	3
Q2 2026	2	$65m	13	14