account_balance

Investment manager · 13F filer · SEC CIK 1600133

13D Management LLC

Reported value$71.3Mas of Jun 30, 2026
Positions11 1 new, 3 sold out
Top 10 weight94.4%VSAT alone is 16%
FiledAug 1445 days after quarter end

Portfolio · as of Jun 30, 2026

Where the money is

New or addedTrimmedHeld

This fund reports 11 stocks.

Box size is the share of the fund. 13F only covers US-listed stocks, so foreign holdings and short positions are missing.

Show the top 11 as a list
VSAT Viasat Inc 15.9% Trimmed −23%TWLO Twilio Inc 11.3% Trimmed −36%MRCY Mercury Systems Inc 10.4% HeldPSO Pearson PLC 10.2% HeldALV Autoliv Inc 9.1% HeldCRL Charles River Laboratories International, Inc. 8.2% HeldSNPS Synopsys Inc 7.9% NewEXEL Exelixis, Inc. 7.7% HeldETSY Etsy Inc 7.6% HeldITGR Integer Holdings Corp 6.2% HeldFUN Six Flags Entertainment Corporation 5.6% Held

What changed

Biggest moves since Mar 31, 2026

Filed Aug 14, 2026, compared with the May 15, 2026 filing
add_circleNew
arrow_upwardAdded

None

arrow_downwardTrimmed
remove_circleSold out

Where this data comes from. Insider trades, fund holdings, activist stakes and company results come from public SEC EDGAR filings (Forms 4, 13F, 13D/13G, 10-Q and 8-K). Congress trades come from the STOCK Act reports members file with the House Clerk and the Senate. Daily closing prices come from post-no-preference/stocks on DoltHub, a community-run database shared under CC BY-SA 4.0; the prices we show stay under that license. They are each day's close, not live or official exchange prices.

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