Institutional Manager · CIK 0000807249
GAMCO INVESTORS, INC. ET AL
GREENWICH, CT · File #028-01887
Latest AUM
$10.41B
Positions
1,036
Top-10 Concentration
36.8%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| REDUCE | MUELLER INDUSTRIES INC | 624756102 | -326,668 | -$37.5M | +$30.0M |
| NEW | CONFLUENT INC-CLASS A | 20717M103 | +836,800 | +$25.3M | $0 |
| REDUCE | MODINE MANUFACTURING CO | 607828100 | -157,670 | -$21.1M | -$8.6M |
| EXITED | INTERPUBLIC GROUP OF COS INC | 460690100 | -644,865 | -$18.0M | $0 |
| EXITED | VERONA PHARMA PLC - ADR | 925050106 | -163,800 | -$17.5M | $0 |
| ADD | OMNICOM GROUP | OMC | +211,126 | +$17.0M | -$2,415 |
| EXITED | ZIMVIE INC | 98888T107 | -788,583 | -$14.9M | $0 |
| ADD | CHART INDUSTRIES INC | 16115Q308 | +54,777 | +$11.3M | +$1.0M |
| NEW | ALEXANDER & BALDWIN INC | 014491104 | +513,400 | +$10.6M | $0 |
| REDUCE | BANK OF NEW YORK MELLON CORP | 064058100 | -91,162 | -$10.6M | +$9.3M |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 20251,036 pos · $10.41B
- 13F HOLDINGS REPORTQ/E Sep 20251,015 pos · $10.31B
- 13F HOLDINGS REPORTQ/E Jun 20251,048 pos · $10.12B
- 13F HOLDINGS REPORTQ/E Mar 2025854 pos · $9.08B
- 13F HOLDINGS REPORTQ/E Dec 2024871 pos · $9.55B
- 13F HOLDINGS REPORTQ/E Sep 2024865 pos · $9.77B
- 13F HOLDINGS REPORTQ/E Jun 2024872 pos · $9.20B
- 13F HOLDINGS REPORTQ/E Mar 2024858 pos · $9.89B
- 13F HOLDINGS REPORTQ/E Dec 2023847 pos · $8.63B
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | MUELLER INDUSTRIES INC | 624756102 | 1,867,244 | $214.4M | 4.93% |
| 2 | GATX CORP | GATX | 1,197,637 | $203.1M | 4.67% |
| 3 | CRANE CO | CR | 1,065,022 | $196.4M | 4.52% |
| 4 | MADISON SQUARE GARDEN SPORTS | 55825T103 | 613,391 | $158.7M | 3.65% |
| 5 | HERC HOLDINGS INC | HRI | 1,066,722 | $158.3M | 3.64% |
| 6 | AMERICAN EXPRESS CO | AXP | 422,221 | $156.2M | 3.59% |
| 7 | BANK OF NEW YORK MELLON CORP | 064058100 | 1,214,848 | $141.0M | 3.24% |
| 8 | SONY GROUP CORP - SP ADR | SNEJF | 4,975,032 | $127.4M | 2.93% |
| 9 | AMETEK INC | AME | 606,859 | $124.6M | 2.87% |
| 10 | TEXTRON INC | TXT | 1,380,822 | $120.4M | 2.77% |
| 11 | WATTS WATER TECHNOLOGIES-A | WTS | 425,854 | $117.5M | 2.70% |
| 12 | NATIONAL FUEL GAS CO | NFG | 1,445,601 | $115.7M | 2.66% |
| 13 | MODINE MANUFACTURING CO | 607828100 | 830,779 | $110.9M | 2.55% |
| 14 | REPUBLIC SERVICES INC | 760759100 | 472,220 | $100.1M | 2.30% |
| 15 | ATLANTA BRAVES HLDS A IN-A | BATRB | 2,230,362 | $94.8M | 2.18% |
| 16 | RYMAN HOSPITALITY PROPERTIES | 78377T107 | 965,919 | $91.4M | 2.10% |
| 17 | FLOWSERVE CORP | FLS | 1,257,436 | $87.2M | 2.01% |
| 18 | ROLLINS INC | ROL | 1,382,820 | $83.0M | 1.91% |
| 19 | SPHERE ENTERTAINMENT CO | SPHR | 858,887 | $81.7M | 1.88% |
| 20 | WARNER BROS DISCOVERY INC | WBD | 2,767,823 | $79.8M | 1.83% |