13D Management LLC - Stock Holdings in 13F Filings (SEC)

Updated on March 15, 2026.

Based on 13F Filings filed with the SEC on February 17, 2026, for the 2025 Q4 period, 13D Management LLC held in its portfolio 16 assets valued at $84,045,307 (i.e. $84.05M).

The most valuable assets in the portfolio included: TWILIO INC ($8.64M), MERCURY SYS INC ($7.58M), and VIASAT INC ($6.95M).

The chart below shows the top 10 valuable assets, and the table below shows the top 16 valuable assets.

You can see similar for other investment managers.

Related Topics: SEC Topic List.

Data Source: SEC.

Top Valuable Stocks in 13D Management LLC Portfolio

TWILIO INC

MERCURY SYS INC

VIASAT INC

AUTOLIV INC

PEARSON PLC

CHARLES RIV LABS INTL INC

EXELIXIS INC

SOUTHWEST GAS HLDGS INC

BILL HOLDINGS INC

WORKIVA INC

13D Management LLC - Stock Holdings in 13F Filings (SEC)

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Name of Issuer	No. of Shares	Value ($)	Class
TWILIO INC	60755	8641791	CL A
MERCURY SYS INC	103762	7575664	COM
VIASAT INC	201750	6952305	COM
AUTOLIV INC	55839	6628089	COM
PEARSON PLC	458338	6435066	SPONSORED ADR
CHARLES RIV LABS INTL INC	28000	5585440	COM
EXELIXIS INC	120335	5274283	COM
SOUTHWEST GAS HLDGS INC	63798	5105116	COM
BILL HOLDINGS INC	90000	4908600	COM
WORKIVA INC	52000	4485000	COM CL A
WEX INC	29350	4372563	COM
TRIPADVISOR INC	300000	4368000	COM
ETSY INC	71836	3982588	COM
INTEGER HLDGS CORP	47000	3686210	COM
LAMB WESTON HLDGS INC	76001	3183682	COM
SIX FLAGS ENTERTAINMENT CORP	186500	2860910	COM