GABELLI & Co INVESTMENT ADVISERS, INC. — 13F Holdings & Portfolio
CIK 932724 · latest 13F-HR filed 2026-11-12
GABELLI & Co INVESTMENT ADVISERS, INC. manages $639.7M in 13F-reported U.S. long-equity assets across 328 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are WBD (6.13%), TXNM (3.71%), ROKU (2.89%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 71 new positions and exited 59; 64 existing positions rose in reported value and 108 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.
Loading holdings…
AUM
$639.7M
Long-equity book
Holdings
328
Distinct positions
Period
2026-09-30
Filed 2026-11-12
Q/Q Activity
+71 / −59 / ↑64 / ↓108
vs 2026-06-30
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q3 26WBD6.1% · +14%TXNM3.7% · +4%ROKU2.9% · +24%AES2.9% · +10%TECH2.8% · +56%GDV2.8% · 0%KVUE2.6% · +2%NSC2.6% · 0%GDL2.4% · 0%LNTH2.0% · newPEN1.9% · -28%CZR1.9% · +92%RAMP1.8% · +107%MKTX1.7% · newACVA1.6% · newOGN1.6% · +37%SLAB1.5% · +6%ARX1.4% · newCBZ1.4% · newGLU1.4% · 0%PAYO1.2% · +114%ATKR1.1% · newACA1.1% · +71%UNF1.0% · +14%D0.9% · 0%GSAT0.9% · +56%IRDM0.9% · +1035%DV0.8% · newAMZN0.7% · 0%UTZ0.7% · newMGRC0.7% · +10%ITGR0.7% · newSLP0.7% · +94%IMXI0.7% · +10%VREX0.7% · newSOUL0.7% · 0%BWMN0.7% · newBREZ0.7% · 0%TRAD0.5% · 0%HZO0.5% · newLLYVK0.5% · 0%EVAC0.5% · 0%BWIN0.5% · newQRVO0.5% · newIHS0.5% · -30%TSAT0.5% · +24%ESI0.5% · newWHG0.5% · +874%GIW0.5% · 0%ECHO0.5% · 0%FOX0.5% · -29%ACGC0.4% · newGSRF0.4% · 0%OTGA0.4% · 0%AESP0.4% · newMBVI0.4% · 0%BZH0.4% · newMSGK0.4% · newRNW0.4% · newOYSE0.4% · 0%
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 valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q2 26 → Q3 26Estimated 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
5 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 30.8%Cumulative share of the portfolio held in the largest N positions.
Firm Profile & Key People
As of the firm’s regulatory filing dated Jul 14, 2026.
Assets Under Management
$24.55B
Discretionary
$24.55B
Employees
56
Accounts
54
Address
ONE CORPORATE CENTER
RYE, NY 10580-1422
RYE, NY 10580-1422
Phone
(914) 921-5000
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| BALL, JOHN, CHESTER Control | SENIOR VICE PRESIDENT, FUND ADMINISTRATION since Jan 2020 | Less than 5% | Individual |
| CATERINA, KIERAN, DOUGLAS Control | CHIEF ACCOUNTING OFFICER since Mar 2012 | Less than 5% | Individual |
| GABELLI, MARIO, JOSEPH Control | CHIEF INVESTMENT OFFICER since Feb 1999 | Less than 5% | Individual |
| GAMCO INVESTORS, INC. Control | SOLE MEMBER since Feb 1999 | 75% or more | Domestic Entity |
| GOLDMAN, DAVID, MARC Control | VICE PRESIDENT, CORPORATE DEVELOPMENT since Jan 2011 | Less than 5% | Individual |
| WALZ, RICHARD, JOHN Control | CHIEF COMPLIANCE OFFICER since Mar 2015 | Less than 5% | Individual |
| GABELLI, MARIO, JOSEPH Control Indirect owner via GAMCO GABELLI ASSET MANAGEMENT COMPANY LLC | CHAIRMAN AND MAJORITY SHAREHOLDER OF COMMON STOCK since Jan 2026 | 75% or more | Individual |
| GAMCO GABELLI ASSET MANAGEMENT COMPANY LLC Control Indirect owner via GAMCO INVESTORS, INC. | MAJORITY SHAREHOLDER CLASS B COMMON STOCK since Jan 2026 | 75% or more | Domestic Entity |
Ownership & leadership changes · 7 filings with changes since Jan 5, 2012
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
Mar 31, 2026 filing
- No longer listedGABELLI, MARIO, JOSEPH · CEO, DIRECTOR AND SHAREHOLDER OF COMMON STOCK · 75% or more · indirect via GGCP, INC. · control person · listed since Nov 1976
- No longer listedGGCP HOLDINGS LLC · MAJORITY SHAREHOLDER OF THE CLASS B COMMON STOCK · 75% or more · indirect via GAMCO INVESTORS, INC. · control person · listed since May 2010
- No longer listedGGCP, INC. · MANAGER AND MEMBER · 75% or more · indirect via GGCP HOLDINGS LLC · control person · listed since May 2010
- AddedGABELLI, MARIO, JOSEPH · CHAIRMAN AND MAJORITY SHAREHOLDER OF COMMON STOCK · 75% or more · indirect via GAMCO GABELLI ASSET MANAGEMENT COMPANY LLC · control person
- AddedGAMCO GABELLI ASSET MANAGEMENT COMPANY LLC · MAJORITY SHAREHOLDER CLASS B COMMON STOCK · 75% or more · indirect via GAMCO INVESTORS, INC. · control person
Mar 31, 2023 filing
- No longer listedALPERT, BRUCE, N · EXECUTIVE VP AND COO · Less than 5% · control person · listed since Feb 1999
- No longer listedGOLDSTEIN, PETER, D · GENERAL COUNSEL · Less than 5% · control person · listed since Jul 2020
Mar 29, 2021 filing
- AddedGOLDSTEIN, PETER, D · GENERAL COUNSEL · Less than 5% · control person
- ChangedGOLDMAN, DAVID, MARC · title VICE PRESIDENT, CORPORATE DEVELOPMENT AND GENERAL COUNSEL → VICE PRESIDENT, CORPORATE DEVELOPMENT
Mar 26, 2020 filing
- No longer listedLAPOINTE, DIANE, MARIE · CO-CHIEF ACCOUNTING OFFICER · Less than 5% · control person · listed since Mar 2012
- No longer listedMULLADY, AGNES, NORA · VICE PRESIDENT OF GABELLI FUNDS, LLC AND PRESIDENT AND COO OF THE FUND DIVISION · Less than 5% · control person · listed since Apr 2007
- AddedBALL, JOHN, CHESTER · SENIOR VICE PRESIDENT, FUND ADMINISTRATION · Less than 5% · control person
- ChangedCATERINA, KIERAN, DOUGLAS · title CO-CHIEF ACCOUNTING OFFICER → CHIEF ACCOUNTING OFFICER
Mar 30, 2018 filing
- ChangedMULLADY, AGNES, NORA · title VICE PRESIDENT OF GABELLI FUNDS, LLC AND PRESIDENT AND COO OF THE OPEN-END FUND DIVISION → VICE PRESIDENT OF GABELLI FUNDS, LLC AND PRESIDENT AND COO OF THE FUND DIVISION
Mar 29, 2016 filing
- No longer listedZUCCCARO, ROBERT · CHIEF FINANCIAL OFFICER · Less than 5% · control person · listed since Feb 2011
- AddedCATERINA, KIERAN, DOUGLAS · CO-CHIEF ACCOUNTING OFFICER · Less than 5% · control person
- AddedLAPOINTE, DIANE, MARIE · CO-CHIEF ACCOUNTING OFFICER · Less than 5% · control person
- ChangedGOLDMAN, DAVID, MARC · now a control person
- ChangedWALZ, RICHARD, JOHN · now a control person
Mar 30, 2015 filing
- AddedWALZ, RICHARD, JOHN · CHIEF COMPLIANCE OFFICER · Less than 5%
- ChangedALPERT, BRUCE, N · title EXECUTIVE VP AND COO / CHIEF COMPLIANCE OFFICER → EXECUTIVE VP AND COO
Jan 5, 2012 filing (earliest on record)
- ListedALPERT, BRUCE, N · EXECUTIVE VP AND COO / CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ListedGABELLI, MARIO, JOSEPH · CHIEF INVESTMENT OFFICER · Less than 5% · control person
- ListedGABELLI, MARIO, JOSEPH · CEO, DIRECTOR AND SHAREHOLDER OF COMMON STOCK · 75% or more · indirect via GGCP, INC. · control person
- ListedGAMCO INVESTORS, INC. · SOLE MEMBER · 75% or more · control person
- ListedGGCP HOLDINGS LLC · MAJORITY SHAREHOLDER OF THE CLASS B COMMON STOCK · 75% or more · indirect via GAMCO INVESTORS, INC. · control person
- ListedGGCP, INC. · MANAGER AND MEMBER · 75% or more · indirect via GGCP HOLDINGS LLC · control person
- ListedGOLDMAN, DAVID, MARC · VICE PRESIDENT, CORPORATE DEVELOPMENT AND GENERAL COUNSEL · Less than 5%
- ListedMULLADY, AGNES, NORA · VICE PRESIDENT OF GABELLI FUNDS, LLC AND PRESIDENT AND COO OF THE OPEN-END FUND DIVISION · Less than 5% · control person
- ListedZUCCCARO, ROBERT · CHIEF FINANCIAL OFFICER · Less than 5% · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- WARNER BROS DISCOVERY INC$9.5M +32.1%
- BIO-TECHNE CORP$6.8M +59.5%
- LIVERAMP HOLDINGS INC$5.8M +106.2%
- CAESARS ENTERTAINMENT INC$5.7M +88.1%
- IRIDIUM COMMUNICATIONS INC$5.1M +891.0%
Top Trims
- PENUMBRA INC-$4.6M -27.3%
- IHS HOLDING LTD-$1.3M -28.7%
- STURM RUGER & CO INC-$1.1M -63.6%
- BRIGHTHOUSE FINANCIAL INC-$1.0M -28.7%
- STUBHUB HOLDINGS INC-CLASS A-$978.0K -56.6%
New Positions
- LANTHEUS HOLDINGS INC$12.8M
- MARKETAXESS HOLDINGS INC$10.9M
- ACV AUCTIONS INC-A$10.4M
- ACCELERANT HOLDINGS-CL A$9.2M
- CBIZ INC$8.8M
Exited Positions
- ELECTRONIC ARTS INC$30.7M
- CHART INDUSTRIES INC$29.2M
- JANUS HENDERSON GROUP LTD$20.0M
- DIGITALBRIDGE GROUP INC$14.4M
- WEBSTER FINANCIAL CORP$13.8M
GABELLI & Co INVESTMENT ADVISERS, INC. Holdings (2026-09-30)
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 | WARNER BROS DISCOVERY INC | WBD | 934423104 | $39.2M | 6.13% | 1,266,690 | SH |
| 2 | TXNM ENERGY INC | TXNM | 69349H107 | $23.8M | 3.71% | 407,336 | SH |
| 3 | ROKU INC | ROKU | 77543R102 | $18.5M | 2.89% | 121,200 | SH |
| 4 | AES CORP | AES | 00130H105 | $18.4M | 2.88% | 1,236,450 | SH |
| 5 | BIO-TECHNE CORP | TECH | 09073M104 | $18.2M | 2.84% | 250,710 | SH |
| 6 | GABELLI DIVIDEND & INCOME TR | GDV | 36242H104 | $17.7M | 2.77% | 626,000 | SH |
| 7 | KENVUE INC | KVUE | 49177J102 | $16.5M | 2.58% | 934,100 | SH |
| 8 | NORFOLK SOUTHERN CORP | NSC | 655844108 | $16.5M | 2.58% | 53,320 | SH |
| 9 | GABELLI GDL FUND | GDL | 361570104 | $15.4M | 2.41% | 1,846,636 | SH |
| 10 | LANTHEUS HOLDINGS INC | LNTH | 516544103 | $12.8M | 2.00% | 128,386 | SH |
| 11 | PENUMBRA INC | PEN | 70975L107 | $12.2M | 1.91% | 38,432 | SH |
| 12 | CAESARS ENTERTAINMENT INC | CZR | 12769G100 | $12.2M | 1.91% | 411,347 | SH |
| 13 | LIVERAMP HOLDINGS INC | RAMP | 53815P108 | $11.3M | 1.76% | 300,413 | SH |
| 14 | MARKETAXESS HOLDINGS INC | MKTX | 57060D108 | $10.9M | 1.71% | 66,652 | SH |
| 15 | ACV AUCTIONS INC-A | ACVA | 00091G104 | $10.4M | 1.63% | 998,161 | SH |
| 16 | ORGANON & CO | OGN | 68622V106 | $10.3M | 1.61% | 753,950 | SH |
| 17 | SILICON LABORATORIES INC | SLAB | 826919102 | $9.5M | 1.49% | 42,879 | SH |
| 18 | ACCELERANT HOLDINGS-CL A | ARX | G00894108 | $9.2M | 1.43% | 463,855 | SH |
| 19 | CBIZ INC | CBZ | 124805102 | $8.8M | 1.38% | 161,350 | SH |
| 20 | GABELLI GLBL UTIL & INC TR | GLU | 36242L105 | $8.6M | 1.35% | 486,810 | SH |
| 21 | PAYONEER GLOBAL INC | PAYO | 70451X104 | $7.8M | 1.21% | 1,086,694 | SH |
| 22 | ATKORE INC | ATKR | 047649108 | $7.0M | 1.10% | 74,303 | SH |
| 23 | ARCOSA INC | ACA | 039653100 | $7.0M | 1.09% | 47,641 | SH |
| 24 | UNIFIRST CORP/MA | UNF | 904708104 | $6.6M | 1.03% | 26,299 | SH |
| 25 | DOMINION ENERGY INC | D | 25746U109 | $6.1M | 0.95% | 100,000 | SH |
| 26 | GLOBALSTAR INC | GSAT | 378973507 | $5.9M | 0.93% | 71,569 | SH |
| 27 | IRIDIUM COMMUNICATIONS INC | IRDM | 46269C102 | $5.6M | 0.88% | 117,451 | SH |
| 28 | DOUBLEVERIFY HOLDINGS INC | DV | 25862V105 | $5.1M | 0.79% | 375,702 | SH |
| 29 | AMAZON.COM INC | AMZN | 023135106 | $4.7M | 0.74% | 19,000 | SH |
| 30 | UTZ BRANDS INC | UTZ | 918090101 | $4.7M | 0.73% | 327,620 | SH |
| 31 | MCGRATH RENTCORP | MGRC | 580589109 | $4.6M | 0.72% | 40,108 | SH |
| 32 | INTEGER HOLDINGS CORP | ITGR | 45826H109 | $4.6M | 0.71% | 36,200 | SH |
| 33 | SIMULATIONS PLUS INC | SLP | 829214105 | $4.3M | 0.67% | 231,423 | SH |
| 34 | INTERNATIONAL MONEY EXPRESS | IMXI | 46005L101 | $4.3M | 0.66% | 367,196 | SH |
| 35 | VAREX IMAGING CORP | VREX | 92214X106 | $4.2M | 0.66% | 229,662 | SH |
| 36 | SOULPOWER ACQUISITION CO-A | SOUL | G82745103 | $4.2M | 0.66% | 403,700 | SH |
| 37 | BOWMAN CONSULTING GROUP LTD | BWMN | 103002101 | $4.2M | 0.65% | 97,600 | SH |
| 38 | BREEZE ACQUISITION COR -ORD | BREZ | G13227106 | $4.2M | 0.65% | 414,950 | SH |
| 39 | APEX TECH ACQUISITION INC | TRAD | G0R21F105 | $3.5M | 0.54% | 344,000 | SH |
| 40 | MARINEMAX INC | HZO | 567908108 | $3.4M | 0.54% | 65,500 | SH |
| 41 | LIBERTY LIVE HOLDINGS-C | LLYVK | 530909308 | $3.4M | 0.53% | 35,054 | SH |
| 42 | EQV VENTURES ACQ CORP II -A | EVAC | G3106Q102 | $3.4M | 0.52% | 325,250 | SH |
| 43 | BALDWIN INSURANCE GROUP INC/ | BWIN | 05589G102 | $3.3M | 0.51% | 103,150 | SH |
| 44 | QORVO INC | QRVO | 74736K101 | $3.3M | 0.51% | 28,516 | SH |
| 45 | IHS HOLDING LTD | IHS | G4701H109 | $3.3M | 0.51% | 389,533 | SH |
| 46 | TELESAT CORP | TSAT | 879512309 | $3.2M | 0.50% | 69,261 | SH |
| 47 | ELEMENT SOLUTIONS INC | ESI | 28618M106 | $3.1M | 0.49% | 85,662 | SH |
| 48 | WESTWOOD HOLDINGS GROUP INC | WHG | 961765104 | $3.1M | 0.48% | 165,978 | SH |
| 49 | GIGCAPITAL8 CORP-A | GIW | G3864J100 | $3.1M | 0.48% | 299,871 | SH |
| 50 | ECHOSTAR CORP-A | ECHO | 278768106 | $3.0M | 0.47% | 33,698 | SH |
Filing History
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-09-30 | 2026-11-12 | $639.7M | 328 | 0001140361-26-043448 |
| 2026-06-30 | 2026-08-12 | $687.6M | 316 | 0001140361-26-032510 |
| 2026-03-31 | 2026-05-14 | $674.1M | 297 | 0001140361-26-021336 |
| 2025-12-31 | 2026-02-05 | $665.8M | 279 | 0001140361-26-003899 |
| 2025-09-30 | 2025-11-12 | $623.6M | 273 | 0001140361-25-041669 |
Filer Information
Address
191 MASON STREETGREENWICH, CT 06830
Phone
(914) 921-5000
Filing Manager
GABELLI & Co INVESTMENT ADVISERS, INC.
Greenwich, CT
Signatory
Douglas R. Jamieson
President