Needham Investment Management’s Ecovyst ECVT Stock Holding History

Needham Investment 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	$12.7M	Hold	1,020,000	–	–	0.38%	70
2026 Q1	$13.1M	Hold	1,020,000	–	–	0.67%	49
2025 Q4	$9.92M	Buy	1,020,000 +40,000	+4%	+$349K	0.63%	51
2025 Q3	$8.58M	Buy	980,000 +60,000	+7%	+$529K	0.6%	52
2025 Q2	$7.57M	Hold	920,000	–	–	0.6%	50
2025 Q1	$5.7M	Hold	920,000	–	–	0.53%	56
2024 Q4	$7.03M	Buy	920,000 +5,000	+0.5%	+$36.9K	0.54%	63
2024 Q3	$6.27M	Buy	915,000 +185,000	+25%	+$1.41M	0.48%	63
2024 Q2	$6.55M	Buy	730,000 +230,000	+46%	+$2.22M	0.54%	53
2024 Q1	$5.58M	Buy	+500,000	New	+$4.73M	0.52%	53

Other funds holding ECVT

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 Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Brown Advisory Baltimore, Maryland $64.6B AUM 18.98% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Needham Investment Management's ECVT Position: Q2 2026 in Review

Needham Investment Management held its Ecovyst (ECVT) position steady in Q2 2026 at 1,020,000 shares worth $12.7M. The position accounts for 0.38% of the portfolio, ranked #70.

Needham Investment Management first reported a position in ECVT in Q1 2024 and has held it in 10 quarters since. The position peaked at $13.1M in Q1 2026. 209 funds tracked by Wall St. Rank hold ECVT as of Q2 2026.

Needham Investment Management held 1,020,000 shares of Ecovyst worth $12.7M as of Q2 2026.
Needham Investment Management left its Ecovyst share count unchanged in Q2 2026.
Ecovyst made up 0.38% of Needham Investment Management's portfolio in Q2 2026, its #70 holding.
Needham Investment Management first reported a position in Ecovyst in Q1 2024 and has held it in 10 quarters since.
Needham Investment Management's Ecovyst position peaked at $13.1M in Q1 2026.
209 funds tracked by Wall St. Rank held Ecovyst as of Q2 2026.

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