13D Management LLC

CIK 0001600133 · NEW YORK, NY · Quarter end: 2026-06-30 · Filed on: 2026-08-14 · Open the SEC source

13D Management LLC reported 11 positions worth $71.3M as of June 30, 2026 (13F filed August 14, 2026). Largest holding: VSAT (15.9%).

Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$71.3M
2026 Q2
Positions
11
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
94.4%
Est. Net Flow (Q)
2026 Q2
10 / 11 positions shown
#SymbolCompanyTypeValue% Port.Shares1YYTD
1VSATVIASAT INCSH$11.3M15.89%126,250
2TWLOTWILIO INCSH$8.0M11.28%39,000
3MRCYMERCURY SYS INCSH$7.4M10.37%60,462
4PSOPEARSON PLCSH$7.3M10.21%458,338
5ALVAUTOLIV INCSH$6.5M9.09%55,839
6CRLCHARLES RIV LABS INTL INCSH$5.9M8.20%25,800
7SNPSSYNOPSYS INCSH$5.6M7.91%12,650
8EXELEXELIXIS INCSH$5.5M7.73%101,335
9ETSYETSY INCSH$5.4M7.59%71,836
10ITGRINTEGER HLDGS CORPSH$4.4M6.16%47,000

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Read the 2026-Q2 quarterly report · 13F Filing Calendar

Frequently Asked Questions

What stocks does 13D Management LLC hold as of Q2 2026?

13D Management LLC reported 11 positions worth $71.3M in its Q2 2026 13F filing. Largest positions: VSAT (15.9%), TWLO (11.3%), MRCY (10.4%), PSO (10.2%) and ALV (9.1%).

What did 13D Management LLC buy in Q2 2026?

No previous quarter is available yet; the comparison appears with the next filing.

What did 13D Management LLC sell in Q2 2026?

No previous quarter is available yet.

13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.