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.

Loading holdings…
AUM
$125.0M

Long-equity book

Holdings
133

Distinct positions

Period
2026-09-30

Filed 2026-11-05

Q/Q Activity
+12 / −11 / ↑47 / ↓30

vs 2026-06-30

Portfolio charts

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

Portfolio map

Q3 26

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

Q2 26 → Q3 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 = 32.2%

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

Firm Profile & Key People

As of the firm’s regulatory filing dated Oct 26, 2026.

Assets Under Management
$183.2M
Discretionary
$183.2M
Employees
12
Accounts
1,253
Address
1 BRUNSWICK AVENUE
GARDINER, ME 04345
Phone
(207) 248-6767
Name Title / Status Ownership Type
ARBOUR, JAC, MICHAEL ControlMANAGING MEMBER/CHIEF COMPLIANCE OFFICER
since Nov 2016
75% or moreIndividual
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.

Nov 3, 2025 filing
  • No longer listedPCOLAR, DEVON, RAE · CHIEF OPERATING OFFICER · Less than 5% · listed since May 2020
Apr 6, 2022 filing (earliest on record)
  • 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)

Show all 47 →

Top Trims

Show all 30 →

Exited Positions

Show all 11 →

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
Filing History
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
Filer Information
Address
1 BRUNSWICK AVENUE
GARDINER, ME 04345
Phone
(207) 248-6767
Filing Manager
J.M. Arbour, LLC
GARDINER, ME
Signatory
JAC ARBOUR
CHIEF COMPLIANCE OFFICER