J.M. Arbour, LLC — 13F Holdings & Portfolio
CIK 2099154 · latest 13F-HR filed 2026-11-05
J.M. Arbour, LLC manages $125.0M in 13F-reported U.S. long-equity assets across 133 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are IUSB (7.77%), IVV (6.48%), IVW (2.83%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 12 new positions and exited 11; 47 existing positions rose in reported value and 30 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.
Long-equity book
Distinct positions
Filed 2026-11-05
vs 2026-06-30
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q3 26Box 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
4 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 = 32.2%Cumulative share of the portfolio held in the largest N positions.
As of the firm’s regulatory filing dated Oct 26, 2026.
GARDINER, ME 04345
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| ARBOUR, JAC, MICHAEL Control | MANAGING MEMBER/CHIEF COMPLIANCE OFFICER since Nov 2016 | 75% or more | Individual |
Ownership & leadership changes · 1 filing with changes since Apr 6, 2022
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.
- No longer listedPCOLAR, DEVON, RAE · CHIEF OPERATING OFFICER · Less than 5% · listed since May 2020
- ListedARBOUR, JAC, MICHAEL · MANAGING MEMBER/CHIEF COMPLIANCE OFFICER · 75% or more · control person
- ListedPCOLAR, DEVON, RAE · CHIEF OPERATING OFFICER · Less than 5%
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)
- ISHARES TR$1.7M +21.1%
- BLACKROCK ETF TRUST$1.3M +120.6%
- NVIDIA CORPORATION$466.5K +19.2%
- BLACKROCK ETF TRUST$458.3K +32.7%
- BLACKROCK ETF TRUST II$429.4K +33.5%
Top Trims
- ISHARES INC-$905.5K -45.7%
- ISHARES TR-$493.4K -27.7%
- FLEX LTD-$408.0K -31.4%
- EXPEDIA GROUP INC-$392.9K -49.5%
- BLACKROCK ETF TRUST-$316.4K -17.9%
New Positions
- HORIZON FDS$3.2M
- HORIZON FDS$2.1M
- ISHARES TR$1.5M
- PIMCO ETF TR$1.5M
- EXXONMOBIL HOLDINGS CORP$1.5M
Exited Positions
- ISHARES TR$2.2M
- TWO RDS SHARED TR$1.6M
- ISHARES TR$1.6M
- MERCK & CO INC$276.8K
- AMGEN INC$240.1K
J.M. Arbour, LLC 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 | ISHARES TR | IUSB | 46434V613 | $9.7M | 7.77% | 220,375 | SH |
| 2 | ISHARES TR | IVV | 464287200 | $8.1M | 6.48% | 10,576 | SH |
| 3 | ISHARES TR | IVW | 464287309 | $3.5M | 2.83% | 24,820 | SH |
| 4 | BLACKROCK ETF TRUST | DYNF | 09290C103 | $3.3M | 2.66% | 47,959 | SH |
| 5 | HORIZON FDS | AFIF | 44053A440 | $3.2M | 2.53% | 342,458 | SH |
| 6 | ISHARES TR | IVE | 464287408 | $3.1M | 2.50% | 13,675 | SH |
| 7 | NVIDIA CORPORATION | NVDA | 67066G104 | $2.9M | 2.32% | 12,707 | SH |
| 8 | BLACKROCK ETF TRUST | CORO | 09290C764 | $2.3M | 1.85% | 63,597 | SH |
| 9 | HORIZON FDS | AESR | 44053A424 | $2.1M | 1.69% | 106,034 | SH |
| 10 | APPLE INC | AAPL | 037833100 | $2.0M | 1.62% | 6,090 | SH |
| 11 | ISHARES TR | GOVT | 46429B267 | $2.0M | 1.62% | 92,547 | SH |
| 12 | BLACKROCK ETF TRUST | BLCR | 09290C855 | $1.9M | 1.49% | 38,033 | SH |
| 13 | HORIZON FDS | SFTY | 44053A549 | $1.8M | 1.41% | 55,533 | SH |
| 14 | BLACKROCK ETF TRUST II | GGOV | 092528835 | $1.7M | 1.37% | 34,152 | SH |
| 15 | MICROSOFT CORP | MSFT | 594918104 | $1.5M | 1.23% | 3,008 | SH |
| 16 | META PLATFORMS INC | META | 30303M102 | $1.5M | 1.21% | 2,083 | SH |
| 17 | ISHARES TR | ACWX | 464288240 | $1.5M | 1.20% | 19,851 | SH |
| 18 | PIMCO ETF TR | BOND | 72201R775 | $1.5M | 1.17% | 16,835 | SH |
| 19 | ISHARES TR | TLH | 464288653 | $1.5M | 1.17% | 15,804 | SH |
| 20 | EXXONMOBIL HOLDINGS CORP | XOM | 30233Q108 | $1.5M | 1.17% | 8,950 | SH |
| 21 | BLACKROCK ETF TRUST | BAI | 09290C780 | $1.4M | 1.16% | 30,698 | SH |
| 22 | BLACKROCK ETF TRUST | IALT | 09290C665 | $1.4M | 1.14% | 47,668 | SH |
| 23 | IRON MTN INC DEL | IRM | 46284V101 | $1.3M | 1.04% | 11,760 | SH |
| 24 | ISHARES TR | EFG | 464288885 | $1.3M | 1.03% | 10,764 | SH |
| 25 | AMAZON COM INC | AMZN | 023135106 | $1.2M | 0.97% | 4,885 | SH |
| 26 | VANGUARD STAR FDS | VXUS | 921909768 | $1.2M | 0.97% | 14,202 | SH |
| 27 | IBEX LTD | IBEX | G4690M101 | $1.2M | 0.94% | 27,237 | SH |
| 28 | ALPHABET INC | GOOG | 02079K107 | $1.1M | 0.91% | 3,332 | SH |
| 29 | VERIZON COMMUNICATIONS INC | VZ | 92343V104 | $1.1M | 0.89% | 24,300 | SH |
| 30 | ISHARES INC | IEMG | 46434G103 | $1.1M | 0.86% | 13,253 | SH |
| 31 | ISHARES TR | EFV | 464288877 | $1.0M | 0.83% | 13,079 | SH |
| 32 | ATLANTA BRAVES HLDGS INC | BATRK | 047726302 | $1.0M | 0.81% | 19,238 | SH |
| 33 | SALESFORCE INC | CRM | 79466L302 | $995.6K | 0.80% | 4,337 | SH |
| 34 | BLACKROCK ETF TRUST | THRO | 09290C806 | $995.6K | 0.80% | 22,637 | SH |
| 35 | ALPHABET INC | GOOGL | 02079K305 | $992.7K | 0.79% | 2,885 | SH |
| 36 | NICOLET BANKSHARES INC | NIC | 65406E102 | $968.0K | 0.77% | 5,938 | SH |
| 37 | EXELIXIS INC | EXEL | 30161Q104 | $965.3K | 0.77% | 16,527 | SH |
| 38 | ITURAN LOCATION AND CONTROL | ITRN | M6158M104 | $964.5K | 0.77% | 18,830 | SH |
| 39 | BAR HBR BANKSHARES | BHB | 066849100 | $950.1K | 0.76% | 24,558 | SH |
| 40 | AZZ INC | AZZ | 002474104 | $946.1K | 0.76% | 7,040 | SH |
| 41 | MUELLER INDS INC | MLI | 624756102 | $942.6K | 0.75% | 15,551 | SH |
| 42 | STAG INDUSTRIAL INC | STAG | 85254J102 | $923.1K | 0.74% | 25,779 | SH |
| 43 | NATIONAL FUEL GAS CO | NFG | 636180101 | $921.8K | 0.74% | 12,151 | SH |
| 44 | SLB LIMITED | SLB | 806857108 | $917.2K | 0.73% | 18,825 | SH |
| 45 | WISDOMTREE TR | DXJ | 97717W851 | $907.2K | 0.73% | 5,025 | SH |
| 46 | CORPAY INC | CPAY | 219948106 | $907.0K | 0.73% | 2,334 | SH |
| 47 | LIFE TIME GROUP HOLDINGS INC | LTH | 53190C102 | $906.6K | 0.73% | 22,732 | SH |
| 48 | REGENERON PHARMACEUTICALS | REGN | 75886F107 | $906.1K | 0.72% | 1,195 | SH |
| 49 | BERKLEY W R CORP | WRB | 084423102 | $906.1K | 0.72% | 13,416 | SH |
| 50 | FLEX LTD | FLEX | Y2573F102 | $891.0K | 0.71% | 8,101 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-09-30 | 2026-11-05 | $125.0M | 133 | 0001951757-26-001811 |
| 2026-06-30 | 2026-08-14 | $116.0M | 132 | 0001951757-26-001270 |
| 2026-03-31 | 2026-04-21 | $104.2M | 190 | 0002099154-26-000002 |
| 2025-12-31 | 2026-01-26 | $100.2M | 190 | 0002099154-26-000001 |
GARDINER, ME 04345