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Broad Run Investment Management, LLC — 13F Holdings & Portfolio

CIK 1568621 · latest 13F-HR filed 2026-08-14

Backtest portfolio

Broad Run Investment Management, LLC manages $649.7M in 13F-reported U.S. long-equity assets across 24 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are ASTS (19.91%), AMAT (16.41%), SUNB (7.90%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 0 new positions and exited 0; 11 existing positions rose in reported value and 3 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
$649.7M

Long-equity book

Holdings
24

Distinct positions

Period
2026-06-30

Filed 2026-08-14

Q/Q Activity
+0 / −0 / ↑11 / ↓3

vs 2026-03-31

Portfolio charts

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

Portfolio map

Q2 26
ASTS19.9% · -0%AMAT16.4% · -0%SUNB7.9% · -0%BN7.9% · -1%MKL6.2% · -1%ORLY5.3% · -0%AON5.1% · -0%BAM4.2% · -0%HLT3.3% · 0%GOOG3.0% · -2%NVR2.8% · -0%CDW2.7% · -0%AMT2.6% · -0%KMX2.3% · -0%TDG2.2% · 0%DHR2.1% · 0%RH1.6% · -0%SHEN1.5% · -25%CCOI1.4% · -0%FND0.6% · 0%DIS0.5% · -2%RELX0.2% · 0%BNT0.2% · 0%GOOGL0.1% · 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 value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 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 = 79.2%

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

Firm Profile & Key People
Assets Under Management
$681.8M
Discretionary
$681.8M
Employees
6
Accounts
140
Address
1530 WILSON BLVD
SUITE 530
ARLINGTON, VA 22209
Phone
(703) 260-1260
Website
Name Title / Status Ownership Type
ADKINS, BRYAN, HUGHES ControlCHIEF OPERATING OFFICER & CHIEF COMPLIANCE OFFICERLess than 5%Individual
MACAULEY, BRIAN, EDWARD ControlPORTFOLIO MANAGER/MANAGING MEMBER25–50%Individual
RAINEY, DAVID, SHAFFER ControlPORTFOLIO MANAGER/MANAGING MEMBER25–50%Individual
ROTHBERG, IRA, MITCHELL ControlPORTFOLIO MANAGER/MANAGING MEMBER25–50%Individual

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 11 →

Top Trims

Show all 3 →

New Positions

  • No new positions this quarter.
Show all 0 →

Exited Positions

  • No exits this quarter.
Show all 0 →

Broad Run Investment Management, 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 AST SPACEMOBILE INC ASTS 00217D100 $129.4M 19.91% 1,455,969 SH
2 APPLIED MATLS INC AMAT 038222105 $106.7M 16.41% 147,512 SH
3 SUNBELT RENTALS HOLDINGS INC SUNB 866966104 $51.4M 7.90% 702,078 SH
4 BROOKFIELD CORP BN 11271J107 $51.3M 7.89% 1,204,081 SH
5 MARKEL CORP MKL 570535104 $40.2M 6.19% 20,578 SH
6 OREILLY AUTOMOTIVE INC ORLY 67103H107 $34.7M 5.34% 376,817 SH
7 AON PLC AON G0403H108 $33.4M 5.14% 100,650 SH
8 BROOKFIELD ASSET MANAGMT LTD BAM 113004105 $27.0M 4.16% 602,709 SH
9 HILTON WORLDWIDE HLDGS INC HLT 43300A203 $21.2M 3.26% 64,139 SH
10 ALPHABET INC GOOG 02079K107 $19.2M 2.96% 54,423 SH
11 NVR INC NVR 62944T105 $18.1M 2.79% 2,662 SH
12 CDW CORP CDW 12514G108 $17.5M 2.69% 124,310 SH
13 AMERICAN TOWER CORP NEW AMT 03027X100 $17.2M 2.64% 105,005 SH
14 CARMAX INC KMX 143130102 $15.0M 2.31% 283,226 SH
15 TRANSDIGM GROUP INC TDG 893641100 $14.4M 2.21% 10,801 SH
16 DANAHER CORPORATION DHR 235851102 $13.5M 2.08% 70,935 SH
17 RH RH 74967X103 $10.3M 1.58% 62,357 SH
18 SHENANDOAH TELECOMMUNICATION SHEN 82312B106 $9.9M 1.53% 658,567 SH
19 COGENT COMMUNICATIONS HLDGS CCOI 19239V302 $9.2M 1.41% 660,130 SH
20 FLOOR & DECOR HLDGS INC FND 339750101 $3.7M 0.57% 62,000 SH
21 DISNEY WALT CO DIS 254687106 $3.2M 0.50% 33,559 SH
22 RELX PLC RELX 759530108 $1.5M 0.23% 47,000 SH
23 BROOKFIELD WEALTH SOL LTD BNT G17434104 $1.0M 0.15% 23,581 SH
24 ALPHABET INC GOOGL 02079K305 $905.9K 0.14% 2,535 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $649.7M 24 0001568621-26-000009
2026-03-31 2026-05-15 $567.9M 24 0001568621-26-000005
2025-12-31 2026-02-17 $538.5M 24 0001568621-26-000003
2025-09-30 2025-11-14 $610.9M 24 0001568621-25-000014
Filer Information
Address
1530 WILSON BLVD
SUITE 530
ARLINGTON, VA 22209
Phone
(703) 260-1260
Filing Manager
Broad Run Investment Management, LLC
ARLINGTON, VA
Signatory
Bryan H. Adkins
Chief Compliance Officer