GAMCO Investors (Mario Gabelli)
GAMCO INVESTORS, INC. ET AL · CIK 0000807249 · GREENWICH, CT · Quarter end: 2026-06-30 · Filed on: 2026-08-12 · Open the SEC source ↗Activist Investor
Portfolio Value (AUM)Total value of the fund's US stock portfolio reported to the SEC.
$11.15B
2026 Q2
Positions
938
Top-10 ConcentrationHow much of the portfolio sits in the 10 largest holdings. High = concentrated bets.
14.9%
Est. Net Flow (Q)
—
2026 Q2
Top Holdings
MSGS
MADISON SQUARE GARDEN SPORTS
2.1%
CR
CRANE CO
2.0%
MLI
MUELLER INDUSTRIES INC
1.7%
GATX
GATX CORP
1.7%
WTS
WATTS WATER TECHNOLOGIES-A
1.4%
BNY
BANK OF NEW YORK MELLON CORP
1.3%
HRI
HERC HOLDINGS INC
1.3%
SPHR
SPHERE ENTERTAINMENT CO
1.2%
New / Increased
No prior quarter data
Reduced / Exited
No prior quarter data
Read the 2026-Q2 quarterly report · 13F Filing Calendar
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.