NEEDHAM INVESTMENT MANAGEMENT LLC

CIK

1167212

City

NEW YORK

State / Country

Stock

VICR — Vicor Corp

Top Portfolio Positions

175 positions · $1,981,047,136 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
LASR	Nlight, Inc. Technology	1,922,740	$109,634,634	5.53%
VICR	Vicor Corp Technology	522,000	$84,042,000	4.24%
VRT	Vertiv Holdings Co Industrials	285,250	$71,477,945	3.61%
PDFS	Pdf Solutions Inc Technology	2,022,700	$66,162,517	3.34%
AIP	Arteris, Inc. Technology	3,952,500	$64,979,100	3.28%
TDUP	ThredUp Inc. Consumer Cyclical	18,550,000	$60,844,000	3.07%
FORM	Formfactor Inc Technology	603,500	$58,533,465	2.95%
VSH	Vishay Intertechnology Inc Technology	2,920,000	$52,560,000	2.65%
LINC	Lincoln Educational Services Corp Consumer Defensive	1,277,500	$51,968,700	2.62%
ODC	Oil-Dri Corp of America Basic Materials	677,500	$44,098,475	2.23%

Portfolio Trend

25 quarters · across all stocks

Holdings in VICR

Compact Export CSV

Shares Held

Position Value (USD)

25 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$84,042,000	522,000	-8.4%	Shares	Defined	2026-05-15
2025-12-31	$62,447,340	569,775	-11.2%	Shares	Defined	2026-02-17
2025-09-30	$31,892,894	641,450	-9.1%	Shares	Defined	2025-11-14
2025-06-30	$32,001,480	705,500	-8.9%	Shares	Defined	2025-08-14
2025-03-31	$36,207,720	774,000	-11.4%	Shares	Defined	2025-05-15
2024-12-31	$42,231,680	874,000	-3.6%	Shares	Defined	2025-02-14
2024-09-30	$38,161,081	906,439	+2.4%	Shares	Defined	2024-11-14
2024-06-30	$29,346,600	885,000	+13.5%	Shares	Defined	2024-08-14
2024-03-31	$29,827,200	780,000	+43.1%	Shares	Defined	2024-05-15
2023-12-31	$24,487,806	544,900	+18.8%	Shares	Defined	2024-02-14
2023-09-30	$27,021,676	458,850	+0.7%	Shares	Defined	2023-11-14
2023-06-30	$24,597,000	455,500	+11.5%	Shares	Defined	2023-08-14
2023-03-31	$19,174,990	408,500	+19.3%	Shares	Defined	2023-05-15
2022-12-31	$18,409,375	342,500	+8.9%	Shares	Defined	2023-02-14
2022-09-30	$18,599,529	314,500	-0.3%	Shares	Defined	2022-11-14
2022-06-30	$17,267,315	315,500	+8.5%	Shares	Defined	2022-08-12
2022-03-31	$20,512,412	290,750	+32.5%	Shares	Defined	2022-05-16
2021-12-31	$27,872,110	219,500	-1.9%	Shares	Defined	2022-02-14
2021-09-30	$30,031,716	223,850	-2.6%	Shares	Defined	2021-11-15
2021-06-30	$24,304,339	229,850	0.0%	Shares	Defined	2021-08-16
2021-03-31	$19,544,145	229,850	0.0%	Shares	Defined	2021-05-17
2020-12-31	$21,196,767	229,850	-0.3%	Shares	Defined	2021-02-16
2020-09-30	$17,924,538	230,600	-4.4%	Shares	Defined	2021-02-25
2020-06-30	$17,347,145	241,100	-20.9%	Shares	Defined	2021-02-25
2020-03-31	$13,573,565	304,750	—	Shares	Defined	2020-05-15
No 13F history on record for this holder in this stock.