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GAMCO INVESTORS, INC. ET AL — 13F Holdings & Portfolio

CIK 807249 · latest 13F-HR filed 2026-08-12

Backtest portfolio

GAMCO INVESTORS, INC. ET AL manages $11.15B in 13F-reported U.S. long-equity assets across 938 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are MSGS (2.12%), CR (1.96%), MLI (1.70%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 41 new positions and exited 110; 441 existing positions rose in reported value and 272 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM
$11.15B

Long-equity book

Holdings
938

Distinct positions

Period
2026-06-30

Filed 2026-08-12

Q/Q Activity
+41 / −110 / ↑441 / ↓272

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26
MSGS2.1% · +0%CR2.0% · -2%MLI1.7% · -6%GATX1.7% · -4%WTS1.4% · -1%BNY1.3% · newHRI1.3% · +0%SPHR1.2% · -4%AME1.2% · -1%AXP1.2% · -1%MOD1.2% · -11%BATRA1.1% · -1%MYE1.1% · -2%TXT1.1% · -1%RHP1.0% · -4%NPO1.0% · -8%NFG0.9% · +0%RSG0.9% · -1%CW0.8% · -3%SONY0.8% · -2%TSAT0.8% · -3%CNH0.8% · +0%RUSHB0.7% · -1%ODC0.7% · -1%DCO0.7% · -5%FLS0.7% · -2%STT0.7% · -2%CTS0.7% · -2%GOOG0.6% · +8%PAG0.6% · -0%ATI0.6% · -1%NVDA0.6% · +5%SWX0.6% · -2%ASTE0.6% · -2%BATRK0.6% · -5%MWA0.6% · -0%GTX0.6% · -13%TNC0.6% · -1%DE0.5% · -1%AN0.5% · -0%SBGI0.5% · -1%GTLS0.5% · -2%TDS0.5% · -1%ROK0.5% · -2%TV0.5% · -2%ROL0.5% · -1%MTRN0.5% · -5%JPM0.5% · -1%GPC0.5% · +13%AZZ0.5% · -7%AIN0.5% · +9%GRC0.5% · -3%GGG0.5% · -1%CVCO0.4% · -4%ITT0.4% · +6%MSGE0.4% · -4%GFF0.4% · -1%IMKTA0.4% · -4%MOG.A0.4% · -3%TG0.4% · -2%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 14.9%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

Name Title / Status Ownership Type

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

GAMCO INVESTORS, INC. ET AL Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 MADISON SQUARE GARDEN SPORTS MSGS 55825T103 $236.7M 2.12% 589,128 SH
2 CRANE CO CR 224408104 $218.4M 1.96% 978,953 SH
3 MUELLER INDUSTRIES INC MLI 624756102 $189.6M 1.70% 1,542,150 SH
4 GATX CORP GATX 361448103 $186.9M 1.68% 1,054,962 SH
5 WATTS WATER TECHNOLOGIES-A WTS 942749102 $156.2M 1.40% 399,032 SH
6 BANK OF NEW YORK MELLON CORP BNY 064058100 $141.3M 1.27% 976,858 SH
7 HERC HOLDINGS INC HRI 42704L104 $140.0M 1.26% 976,739 SH
8 SPHERE ENTERTAINMENT CO SPHR 55826T102 $132.5M 1.19% 765,913 SH
9 AMETEK INC AME 031100100 $131.7M 1.18% 544,372 SH
10 AMERICAN EXPRESS CO AXP 025816109 $131.6M 1.18% 388,962 SH
11 MODINE MANUFACTURING CO MOD 607828100 $130.8M 1.17% 489,969 SH
12 ATLANTA BRAVES HLDS A IN-A BATRA 047726104 $120.8M 1.08% 2,144,996 SH
13 MYERS INDUSTRIES INC MYE 628464109 $119.1M 1.07% 3,374,319 SH
14 TEXTRON INC TXT 883203101 $117.3M 1.05% 1,278,399 SH
15 RYMAN HOSPITALITY PROPERTIES RHP 78377T107 $114.6M 1.03% 891,400 SH
16 ENPRO INC NPO 29355X107 $106.2M 0.95% 281,677 SH
17 NATIONAL FUEL GAS CO NFG 636180101 $105.8M 0.95% 1,370,347 SH
18 REPUBLIC SERVICES INC RSG 760759100 $95.1M 0.85% 446,379 SH
19 CURTISS-WRIGHT CORP CW 231561101 $92.5M 0.83% 122,132 SH
20 SONY GROUP CORP - SP ADR SONY 835699307 $90.2M 0.81% 4,498,717 SH
21 TELESAT CORP TSAT 879512309 $87.2M 0.78% 1,723,385 SH
22 CNH INDUSTRIAL NV CNH N20944109 $84.3M 0.76% 7,506,278 SH
23 RUSH ENTERPRISES INC - CL B RUSHB 781846308 $80.5M 0.72% 1,052,375 SH
24 OIL-DRI CORP OF AMERICA ODC 677864100 $79.5M 0.71% 778,050 SH
25 DUCOMMUN INC DCO 264147109 $79.2M 0.71% 427,832 SH
26 FLOWSERVE CORP FLS 34354P105 $77.9M 0.70% 1,050,126 SH
27 STATE STREET CORP STT 857477103 $76.5M 0.69% 451,003 SH
28 CTS CORP CTS 126501105 $76.3M 0.68% 1,170,496 SH
29 ALPHABET INC-CL C GOOG 02079K107 $71.9M 0.65% 203,471 SH
30 PENSKE AUTOMOTIVE GROUP INC PAG 70959W103 $70.6M 0.63% 394,387 SH
31 ATI INC ATI 01741R102 $70.6M 0.63% 358,000 SH
32 NVIDIA CORP NVDA 67066G104 $69.5M 0.62% 347,468 SH
33 SOUTHWEST GAS HOLDINGS INC SWX 844895102 $67.8M 0.61% 764,194 SH
34 ASTEC INDUSTRIES INC ASTE 046224101 $66.0M 0.59% 1,077,885 SH
35 ATLANTA BRAVES HLDS C IN-C BATRK 047726302 $65.8M 0.59% 1,268,288 SH
36 MUELLER WATER PRODUCTS INC-A MWA 624758108 $65.6M 0.59% 2,538,072 SH
37 GARRETT MOTION INC GTX 366505105 $61.8M 0.55% 1,707,035 SH
38 TENNANT CO TNC 880345103 $61.4M 0.55% 701,100 SH
39 DEERE & CO DE 244199105 $59.4M 0.53% 93,565 SH
40 AUTONATION INC AN 05329W102 $58.9M 0.53% 317,018 SH
41 SINCLAIR INC SBGI 829242106 $56.1M 0.50% 3,936,001 SH
42 CHART INDUSTRIES INC GTLS 16115Q308 $55.8M 0.50% 266,881 SH
43 TELEPHONE AND DATA SYSTEMS TDS 879433829 $55.2M 0.50% 1,490,973 SH
44 ROCKWELL AUTOMATION INC ROK 773903109 $55.1M 0.49% 111,389 SH
45 GRUPO TELEVISA SA-SPON ADR TV 40049J206 $55.0M 0.49% 20,291,578 SH
46 ROLLINS INC ROL 775711104 $54.7M 0.49% 1,310,305 SH
47 MATERION CORP MTRN 576690101 $53.8M 0.48% 180,940 SH
48 JPMORGAN CHASE & CO JPM 46625H100 $53.2M 0.48% 162,491 SH
49 GENUINE PARTS CO GPC 372460105 $53.0M 0.48% 448,830 SH
50 AZZ INC AZZ 002474104 $52.6M 0.47% 338,991 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-12 $11.15B 938 0001140361-26-032508
2026-03-31 2026-05-14 $10.16B 1,007 0001140361-26-021334
2025-12-31 2026-02-05 $10.41B 1,036 0001140361-26-003895
2025-09-30 2025-11-12 $10.31B 1,015 0001140361-25-041670
Filer Information
Address
191 MASON STREET
GREENWICH, CT 06830
Phone
(914) 921-5000
Filing Manager
GAMCO INVESTORS, INC. ET AL
GREENWICH, CT
Signatory
Douglas R. Jamieson
President - GAMCO Asset Management Inc.