Westmount Partners, LLC — 13F Holdings & Portfolio
CIK 2051491 · latest 13F-HR filed 2026-07-07
Westmount Partners, LLC manages $457.1M in 13F-reported U.S. long-equity assets across 275 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are AAPL (11.68%), NVDA (4.12%), AVGO (4.01%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 25 new positions and exited 27; 147 existing positions rose in reported value and 49 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
$457.1M
Long-equity book
Holdings
275
Distinct positions
Period
2026-06-30
Filed 2026-07-07
Q/Q Activity
+25 / −27 / ↑147 / ↓49
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26AAPL11.7% · +7%NVDA4.1% · +5%AVGO4.0% · +0%VOO4.0% · +10%MSFT3.2% · +2%AMZN2.6% · +3%SPY2.4% · +10%GOOGL2.4% · -6%VT2.0% · +6%IVV2.0% · +4%CACI2.0% · -9%BRK.B1.9% · -6%VTI1.7% · +2%WMT1.4% · +0%QQQ1.3% · -14%GOOG1.3% · +3%IBM1.2% · +2%MRVL0.9% · +3%IJR0.9% · +3%ILMN0.9% · -35%AOA0.8% · +2%VUG0.8% · +416%ASTH0.8% · 0%COST0.8% · +1%DFUV0.7% · -1%META0.7% · +8%BMRC0.7% · 0%TSLA0.7% · +6%SCHX0.7% · 0%INTC0.7% · -24%JPM0.7% · +1%ORCL0.6% · +2%HOOD0.6% · -0%KFY0.6% · 0%LLY0.6% · -1%IVE0.6% · +0%EFA0.6% · +0%WFC0.6% · +2%FNDX0.5% · 0%IWM0.5% · +1%JNJ0.5% · -14%IDMO0.5% · newHD0.5% · +0%IVW0.5% · 0%PG0.5% · -11%V0.5% · +2%SCHG0.5% · -2%USFR0.5% · +0%XOM0.5% · -16%NFLX0.5% · -3%FNDF0.4% · +0%CAT0.4% · +0%IWB0.4% · -1%VEA0.4% · +48%QCOM0.4% · +1%DIS0.4% · +14%ITOT0.4% · +4%XLK0.4% · 0%PANW0.4% · +11%SCHF0.4% · +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
Q1 26 → Q2 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
3 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 = 38.6%Cumulative share of the portfolio held in the largest N positions.
Firm Profile & Key People
As of the firm’s regulatory filing dated May 15, 2026.
Assets Under Management
$5.94B
Discretionary
$5.90B
Employees
39
Accounts
4,798
Address
2049 CENTURY PARK EAST
SUITE 2500
LOS ANGELES, CA 90067
SUITE 2500
LOS ANGELES, CA 90067
Phone
(310) 556-2502
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| AMASH, MICHAEL, JOSEPH Control | PRESIDENT since Jan 2022 | Less than 5% | Individual |
| BERLINER, JAMES, EDGAR Control | CHAIRMAN since Jan 2022 | Less than 5% | Individual |
| CAUVEL, SEAN, CHRISTIAN Control | MANAGING PARTNER since Jan 2022 | Less than 5% | Individual |
| TEMPERANCE WEALTH PARTNERS INC. Control | GENERAL PARTNER since Jan 2018 | Less than 5% | Domestic Entity |
| TEMPERANCE WEALTH PARTNERS LP Control | OWNER since Jan 2018 | 25–50% | Domestic Entity |
| WERNER, CHRISTOPHER, MILES Control | CHIEF OPERATING OFFICER / CHIEF COMPLIANCE OFFICER since Sep 2011 | Less than 5% | Individual |
| WESTMOUNT ASSET MANAGEMENT, INC. Control | MANAGING MEMBER since Sep 2011 | 50–75% | Domestic Entity |
| BERLINER, JAMES, EDGAR Control Indirect owner via WESTMOUNT ASSET MANAGEMENT, INC. | CHAIRMAN since Jan 2022 | 50–75% | Individual |
| JDS TPLP TRUST Control Indirect owner via TEMPERANCE PARTNERS (CANADA) LIMITED PARTNERSHIP II | LIMIED PARTNER, OWNER since Oct 2014 | 75% or more | Foreign Entity |
| SELTZER, JASON, ADAM Control Indirect owner via TEMPERANCE PARTNERS INC. | VICE PRESIDENT, TEMPERANCE PARTNERS INC. since Oct 2019 | General partner, trustee or manager | Individual |
| SORBARA, JULIA, CATHERINE Control Indirect owner via JDS TPLP TRUST | TRUSTEE since Mar 2011 | 25–50% | Individual |
| SORBARA, PAUL, JOSEPH Control Indirect owner via TEMPERANCE PARTNERS INC. | VICE PRESIDENT since Oct 2015 | General partner, trustee or manager | Individual |
| SORBARA, PAUL, JOSEPH Control Indirect owner via JDS TPLP TRUST | TRUSTEE since Mar 2011 | 25–50% | Individual |
| SORBARA, PAUL, JOSEPH Control Indirect owner via TEMPERANCE PARTNERS GP I LIMITED | VICE PRESIDENT since Jan 2011 | General partner, trustee or manager | Individual |
| SORBARA, THOMAS, ANTHONY Control Indirect owner via JDS TPLP TRUST | TRUSTEE since Mar 2011 | 25–50% | Individual |
| TEMPERANCE PARTNERS (CANADA) LIMITED PARTNERSHIP II Control Indirect owner via TEMPERANCE PARTNERS INC. | SHARE-HOLDER OWNER since Oct 2015 | 75% or more | Foreign Entity |
| TEMPERANCE PARTNERS GP I LIMITED Control Indirect owner via TEMPERANCE PARTNERS (CANADA) LIMITED PARTNERSHIP II | GENERAL PARTNER since Jun 2015 | General partner, trustee or manager | Foreign Entity |
| TEMPERANCE PARTNERS INC. Control Indirect owner via TEMPERANCE WEALTH PARTNERS LP | OWNER since Oct 2015 | 75% or more | Domestic Entity |
| TICE, KEVIN, DOUGLAS Control Indirect owner via TEMPERANCE PARTNERS INC. | PRESIDENT since Oct 2015 | General partner, trustee or manager | Individual |
| TICE, KEVIN, DOUGLAS Control Indirect owner via TEMPERANCE PARTNERS GP I LIMITED | PRESIDENT since Jan 2011 | General partner, trustee or manager | Individual |
Ownership & leadership changes · 6 filings with changes since Mar 23, 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.
Feb 9, 2024 filing
- No longer listedBERLINER REVOCABLE TRUST · OWNER · Less than 5% · control person · listed since Oct 2021
- No longer listedBerliner, June, F · TRUSTEE · General partner, trustee or manager · indirect via BERLINER REVOCABLE TRUST · control person · listed since Oct 2021
Mar 24, 2022 filing
- No longer listedBERLINER, ROBERT, ADLER · CHAIRMAN/ELECTED MANAGER · Less than 5% · control person · listed since Sep 2011
- No longer listedBERLINER, ROBERT, ADLER · CHAIRMAN · 50–75% · indirect via WESTMOUNT ASSET MANAGEMENT, INC. · control person · listed since Nov 1998
- AddedBERLINER REVOCABLE TRUST · OWNER · Less than 5% · control person
- AddedBerliner, June, F · TRUSTEE · General partner, trustee or manager · indirect via BERLINER REVOCABLE TRUST · control person
- AddedCAUVEL, SEAN, CHRISTIAN · MANAGING PARTNER · Less than 5% · control person
- ChangedAMASH, MICHAEL, JOSEPH · title SENIOR VICE PRESIDENT → PRESIDENT
- ChangedBERLINER, JAMES, EDGAR · title PRESIDENT/ELECTED MANAGER → CHAIRMAN
- ChangedBERLINER, JAMES, EDGAR · indirect via WESTMOUNT ASSET MANAGEMENT, INC.: title PRESIDENT → CHAIRMAN
Mar 27, 2020 filing
- AddedSELTZER, JASON, ADAM · VICE PRESIDENT, TEMPERANCE PARTNERS INC. · General partner, trustee or manager · indirect via TEMPERANCE PARTNERS INC. · control person
Dec 20, 2018 filing
- No longer listedFINMARK, SUSAN, MARY · CHIEF COMPLIANCE OFFICER · Less than 5% · control person · listed since Sep 2011
- ChangedWERNER, CHRISTOPHER, MILES · title CHIEF OPERATING OFFICER → CHIEF OPERATING OFFICER / CHIEF COMPLIANCE OFFICER
Mar 30, 2018 filing
- No longer listedBURKHART, JR., CHARLES, BYRON · MANAGING MEMBER · 75% or more · indirect via ROSEMONT INVESTMENT PARTNERS, LLC · control person · listed since Mar 2000
- No longer listedROSEMONT INVESTMENT PARTNERS II, LLC · GENERAL PARTNER · General partner, trustee or manager · indirect via ROSEMONT PARTNERS II, L.P. · control person · listed since Apr 2004
- No longer listedROSEMONT INVESTMENT PARTNERS, LLC · MANAGING MEMBER · 75% or more · indirect via ROSEMONT INVESTMENT PARTNERS II, LLC · control person · listed since Apr 2004
- No longer listedROSEMONT PARTNERS II, LP · MEMBER · 25–50% · control person · listed since Sep 2011
- AddedJDS TPLP TRUST · LIMIED PARTNER, OWNER · 75% or more · indirect via TEMPERANCE PARTNERS (CANADA) LIMITED PARTNERSHIP II · control person
- AddedSORBARA, JULIA, CATHERINE · TRUSTEE · 25–50% · indirect via JDS TPLP TRUST · control person
- AddedSORBARA, PAUL, JOSEPH · VICE PRESIDENT · General partner, trustee or manager · indirect via TEMPERANCE PARTNERS INC. · control person
- AddedSORBARA, PAUL, JOSEPH · TRUSTEE · 25–50% · indirect via JDS TPLP TRUST · control person
- AddedSORBARA, PAUL, JOSEPH · VICE PRESIDENT · General partner, trustee or manager · indirect via TEMPERANCE PARTNERS GP I LIMITED · control person
- AddedSORBARA, THOMAS, ANTHONY · TRUSTEE · 25–50% · indirect via JDS TPLP TRUST · control person
- AddedTEMPERANCE PARTNERS (CANADA) LIMITED PARTNERSHIP II · SHARE-HOLDER OWNER · 75% or more · indirect via TEMPERANCE PARTNERS INC. · control person
- AddedTEMPERANCE PARTNERS GP I LIMITED · GENERAL PARTNER · General partner, trustee or manager · indirect via TEMPERANCE PARTNERS (CANADA) LIMITED PARTNERSHIP II · control person
- AddedTEMPERANCE PARTNERS INC. · OWNER · 75% or more · indirect via TEMPERANCE WEALTH PARTNERS LP · control person
- AddedTEMPERANCE WEALTH PARTNERS INC. · GENERAL PARTNER · Less than 5% · control person
- AddedTEMPERANCE WEALTH PARTNERS LP · OWNER · 25–50% · control person
- AddedTICE, KEVIN, DOUGLAS · PRESIDENT · General partner, trustee or manager · indirect via TEMPERANCE PARTNERS INC. · control person
- AddedTICE, KEVIN, DOUGLAS · PRESIDENT · General partner, trustee or manager · indirect via TEMPERANCE PARTNERS GP I LIMITED · control person
Mar 30, 2015 filing
- No longer listedSILVERA, DAVID, DIBLEE · MEMBER · 25–50% · indirect via ROSEMONT INVESTMENT PARTNERS, LLC · control person · listed since Apr 2000
- ChangedBURKHART, JR., CHARLES, BYRON · indirect via ROSEMONT INVESTMENT PARTNERS, LLC: ownership 50–75% → 75% or more
Mar 23, 2012 filing (earliest on record)
- ListedAMASH, MICHAEL, JOSEPH · SENIOR VICE PRESIDENT · Less than 5% · control person
- ListedBERLINER, JAMES, EDGAR · PRESIDENT/ELECTED MANAGER · Less than 5% · control person
- ListedBERLINER, JAMES, EDGAR · PRESIDENT · 50–75% · indirect via WESTMOUNT ASSET MANAGEMENT, INC. · control person
- ListedBERLINER, ROBERT, ADLER · CHAIRMAN/ELECTED MANAGER · Less than 5% · control person
- ListedBERLINER, ROBERT, ADLER · CHAIRMAN · 50–75% · indirect via WESTMOUNT ASSET MANAGEMENT, INC. · control person
- ListedBURKHART, JR., CHARLES, BYRON · MANAGING MEMBER · 50–75% · indirect via ROSEMONT INVESTMENT PARTNERS, LLC · control person
- ListedFINMARK, SUSAN, MARY · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ListedROSEMONT INVESTMENT PARTNERS II, LLC · GENERAL PARTNER · General partner, trustee or manager · indirect via ROSEMONT PARTNERS II, L.P. · control person
- ListedROSEMONT INVESTMENT PARTNERS, LLC · MANAGING MEMBER · 75% or more · indirect via ROSEMONT INVESTMENT PARTNERS II, LLC · control person
- ListedROSEMONT PARTNERS II, LP · MEMBER · 25–50% · control person
- ListedSILVERA, DAVID, DIBLEE · MEMBER · 25–50% · indirect via ROSEMONT INVESTMENT PARTNERS, LLC · control person
- ListedWERNER, CHRISTOPHER, MILES · CHIEF OPERATING OFFICER · Less than 5% · control person
- ListedWESTMOUNT ASSET MANAGEMENT, INC. · MANAGING MEMBER · 50–75% · 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)
- APPLE INC$9.6M +21.8%
- VANGUARD INDEX FDS$3.9M +26.8%
- BROADCOM INC$3.4M +22.7%
- NVIDIA CORPORATION$3.2M +20.7%
- MARVELL TECHNOLOGY INC$2.8M +211.0%
Top Trims
- CACI INTL INC-$2.6M -22.2%
- ABBVIE INC-$1.2M -45.6%
- EXXON MOBIL CORP-$1.0M -32.2%
- NETFLIX INC.-$822.4K -28.1%
- WALMART INC-$605.9K -8.5%
New Positions
- INVESCO EXCH TRADED FD TR II$2.4M
- AIRBNB INC$1.1M
- ISHARES TR$607.7K
- ISHARES TR$538.1K
- DIREXION SHARES ETF TRUST$508.1K
Exited Positions
- MASIMO CORP$4.3M
- INVESCO EXCH TRADED FD TR II$2.2M
- HONEYWELL INTL INC$938.1K
- VANGUARD SCOTTSDALE FDS$696.8K
- VANGUARD WELLINGTON FD$687.4K
Westmount Partners, LLC 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 | APPLE INC | AAPL | 037833100 | $53.4M | 11.68% | 184,506 | SH |
| 2 | NVIDIA CORPORATION | NVDA | 67066G104 | $18.8M | 4.12% | 94,179 | SH |
| 3 | BROADCOM INC | AVGO | 11135F101 | $18.3M | 4.01% | 48,478 | SH |
| 4 | VANGUARD INDEX FDS | VOO | 922908363 | $18.3M | 4.00% | 26,595 | SH |
| 5 | MICROSOFT CORP | MSFT | 594918104 | $14.4M | 3.16% | 38,728 | SH |
| 6 | AMAZON COM INC | AMZN | 023135106 | $11.8M | 2.58% | 49,396 | SH |
| 7 | STATE STR SPDR S&P 500 ETF T | SPY | 78462F103 | $11.0M | 2.41% | 14,760 | SH |
| 8 | ALPHABET INC | GOOGL | 02079K305 | $11.0M | 2.40% | 30,699 | SH |
| 9 | VANGUARD INTL EQUITY INDEX F | VT | 922042742 | $9.3M | 2.03% | 59,056 | SH |
| 10 | ISHARES TR | IVV | 464287200 | $9.1M | 1.98% | 12,109 | SH |
| 11 | CACI INTL INC | CACI | 127190304 | $9.0M | 1.97% | 19,469 | SH |
| 12 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $8.6M | 1.88% | 17,149 | SH |
| 13 | VANGUARD INDEX FDS | VTI | 922908769 | $7.7M | 1.69% | 20,921 | SH |
| 14 | WALMART INC | WMT | 931142103 | $6.5M | 1.42% | 57,307 | SH |
| 15 | INVESCO QQQ TR | QQQ | 46090E103 | $6.0M | 1.31% | 8,128 | SH |
| 16 | ALPHABET INC | GOOG | 02079K107 | $5.8M | 1.27% | 16,453 | SH |
| 17 | INTERNATIONAL BUSINESS MACHS | IBM | 459200101 | $5.5M | 1.21% | 19,639 | SH |
| 18 | MARVELL TECHNOLOGY INC | MRVL | 573874104 | $4.1M | 0.90% | 13,807 | SH |
| 19 | ISHARES TR | IJR | 464287804 | $4.0M | 0.88% | 27,146 | SH |
| 20 | ILLUMINA INC | ILMN | 452327109 | $4.0M | 0.87% | 22,726 | SH |
| 21 | ISHARES TR | AOA | 464289859 | $3.7M | 0.81% | 38,147 | SH |
| 22 | VANGUARD INDEX FDS | VUG | 922908736 | $3.7M | 0.81% | 43,134 | SH |
| 23 | ASTRANA HEALTH INC | ASTH | 03763A207 | $3.6M | 0.79% | 77,755 | SH |
| 24 | COSTCO WHOLESALE CORPORATION | COST | 22160K105 | $3.4M | 0.75% | 3,672 | SH |
| 25 | DIMENSIONAL ETF TRUST | DFUV | 25434V724 | $3.3M | 0.72% | 59,582 | SH |
| 26 | META PLATFORMS INC | META | 30303M102 | $3.3M | 0.71% | 5,794 | SH |
| 27 | BANK OF MARIN BANCORP | BMRC | 063425102 | $3.2M | 0.70% | 115,484 | SH |
| 28 | TESLA INC | TSLA | 88160R101 | $3.2M | 0.69% | 7,531 | SH |
| 29 | SCHWAB STRATEGIC TR | SCHX | 808524201 | $3.1M | 0.68% | 105,342 | SH |
| 30 | INTEL CORP | INTC | 458140100 | $3.1M | 0.67% | 21,865 | SH |
| 31 | JPMORGAN CHASE & CO | JPM | 46625H100 | $3.0M | 0.66% | 9,237 | SH |
| 32 | ORACLE CORP | ORCL | 68389X105 | $2.9M | 0.63% | 19,689 | SH |
| 33 | ROBINHOOD MKTS INC | HOOD | 770700102 | $2.8M | 0.61% | 27,945 | SH |
| 34 | KORN FERRY | KFY | 500643200 | $2.8M | 0.60% | 41,518 | SH |
| 35 | ELI LILLY & CO | LLY | 532457108 | $2.7M | 0.60% | 2,289 | SH |
| 36 | ISHARES TR | IVE | 464287408 | $2.7M | 0.58% | 11,704 | SH |
| 37 | ISHARES TR | EFA | 464287465 | $2.6M | 0.57% | 25,091 | SH |
| 38 | WELLS FARGO & CO | WFC | 949746101 | $2.6M | 0.56% | 31,225 | SH |
| 39 | SCHWAB STRATEGIC TR | FNDX | 808524771 | $2.5M | 0.54% | 79,721 | SH |
| 40 | ISHARES TR | IWM | 464287655 | $2.5M | 0.54% | 8,232 | SH |
| 41 | JOHNSON & JOHNSON | JNJ | 478160104 | $2.5M | 0.54% | 9,734 | SH |
| 42 | INVESCO EXCH TRADED FD TR II | IDMO | 46138E222 | $2.4M | 0.53% | 40,000 | SH |
| 43 | HOME DEPOT INC | HD | 437076102 | $2.3M | 0.50% | 6,536 | SH |
| 44 | ISHARES TR | IVW | 464287309 | $2.3M | 0.50% | 16,637 | SH |
| 45 | PROCTER & GAMBLE CO | PG | 742718109 | $2.3M | 0.50% | 15,517 | SH |
| 46 | VISA INC | V | 92826C839 | $2.2M | 0.49% | 6,515 | SH |
| 47 | SCHWAB STRATEGIC TR | SCHG | 808524300 | $2.2M | 0.47% | 64,114 | SH |
| 48 | WISDOMTREE TR | USFR | 97717Y527 | $2.1M | 0.46% | 42,208 | SH |
| 49 | EXXON MOBIL CORP | XOM | 30231G102 | $2.1M | 0.46% | 15,474 | SH |
| 50 | NETFLIX INC. | NFLX | 64110L106 | $2.1M | 0.46% | 29,412 | SH |
Filing History
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-07-07 | $457.1M | 275 | 0002051491-26-000004 |
| 2026-03-31 | 2026-04-16 | $406.3M | 264 | 0002051491-26-000003 |
| 2025-12-31 | 2026-01-15 | $401.1M | 246 | 0002051491-26-000001 |
Filer Information
Address
2049 CENTURY PARK EASTSUITE 2500
LOS ANGELES, CA 90067
Phone
(310) 556-2502
Filing Manager
Westmount Partners, LLC
LOS ANGELES, CA
Signatory
Chris Werner
Chief Compliance Officer