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Asset manager · Long-only 13F filer
GAMCO Investors
$11.1B+$989.3M vs prior 13FUS long stock positions · not assets under managementSEC EDGAR · 13F-HR · filed 12 August 2026
GAMCO Investors's latest 13F filing covers the quarter ended 30 June 2026 and was filed 12 August 2026 (43 days after quarter end): 938 disclosed US-listed positions — $11.1 billion in long stock. 41 new buys, 34 adds, 77 trims and 110 exits against the prior quarter. Holdings are up to 45 days old by the time they clear EDGAR.
Portfolio · vs S&P 500GAMCO InvestorsS&P 500
Sept 2025GAMCO Investors +8% · S&P: +12%
The line rebuilds GAMCO Investors's disclosed 13F holdings at each filing and holds them to the next, tracked against the S&P 500 where daily price history overlaps. Long US equity only — an illustrative read, not an audited return.
S&P 500 overlay: Finazon · prior-day close, most closes dollar-rounded at the source
Portfolio · vs S&P 500GAMCO InvestorsS&P 500
Sept 2024GAMCO Investors +14% · S&P from Sept 2025: +12%
The line rebuilds GAMCO Investors's disclosed 13F holdings at each filing and holds them to the next, tracked against the S&P 500 where daily price history overlaps. Long US equity only — an illustrative read, not an audited return.
S&P 500 overlay: Finazon · prior-day close, most closes dollar-rounded at the source
Long stock value$11.1B
Positions938
Top holdingMSGS · 2.1%
Top sectorIndustrials 32%
New buys · Q2 202641
Exits · Q2 2026110
Portfolio reconstructed from SEC EDGAR 13F filings · values as reported · as of Q2 2026
What changed against the previous quarter's filing: new positions first, then adds, trims and exits, each sorted by position size. Showing the 20 largest per change type — 262 changes were disclosed in total.
PositionChangeShares movedValue after
HONHONEYWELL INTERNATIONAL INCNew buy+113.2K$25.3M
APA · BP · CHRD · CNX · COP · CVX · DVN · EGY · ENB · EOG · EPD · ET · FANG · FTI · HAL · KLXE · KMI · MPC · NFG · NOV · OII · OKE · OXY · PSX · PTEN · RES · SHEL · SLB · SOC · SOI · TDW · TRP · VLO · VVV · WHD · XOM
Real Estate2%
AHR · AMH · BRX · BXMT · CBRE · CPT · CTRE · DBRG · ELS · EQR · FBRT · GMRE · GYRO · HHH · INN · IVT · JOE · KRG · LAMR · MAA · NSA · O · OUT · PINE · PK · PLD · REG · REXR · RHP · RWT · SILA · SPG · SRG · STAG · STRW · SUI · TPL · TRC · UMH · VICI · WELL
What is GAMCO Investors's biggest holding?+
As of the quarter ended 30 June 2026, the largest disclosed position was MSGS (MADISON SQUARE GARDEN SPORTS), about 2.1% of the disclosed US-listed portfolio by reported value.
What did Mario Gabelli's GAMCO Investors buy in Q2 2026?+
41 new positions were disclosed for the quarter ended 30 June 2026; the largest were HON, HONEYWELL AEROSPACE INC, MU. Adds and trims are listed in the quarterly-changes table on this page.
How concentrated is the portfolio?+
Broadly diversified. The top five positions are 9% of disclosed value and the top ten are 15%.
When is GAMCO Investors's next 13F due?+
13F filings for the quarter ended 30 September 2026 are due by 16 November 2026 — managers have 45 days after each calendar quarter ends. Whether GAMCO Investors files is up to the manager; we show whatever EDGAR receives.
Does this show the whole portfolio?+
No. Form 13F covers US-listed long equity and some options only — no short bets, bonds, cash, private businesses, non-US holdings or timing inside the quarter. Amended filings replace originals; this page always shows the latest canonical version.