Top Institutional Investors

Scarborough Advisors, LLC — 13F Holdings & Portfolio

CIK 1815355 · latest 13F-HR filed 2026-10-16

Backtest portfolio

Scarborough Advisors, LLC manages $23.9M in 13F-reported U.S. long-equity assets across 7 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are INRO (62.05%), SYSB (17.88%), IDEF (14.26%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 2 new positions and exited 142; 2 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
$23.9M

Long-equity book

Holdings
7

Distinct positions

Period
2026-09-30

Filed 2026-10-16

Q/Q Activity
+2 / −142 / ↑2 / ↓3

vs 2026-06-30

Portfolio charts

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

Portfolio map

Q3 26
INRO62.1% · newSYSB17.9% · +206%IDEF14.3% · +718%SPYM2.7% · -99%DYNF1.2% · -99%SCHX1.0% · -100%MBBA0.9% · new

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 = 100%

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

Firm Profile & Key People

As of the firm’s regulatory filing dated Oct 15, 2026.

Assets Under Management
$1.64B
Discretionary
$1.64B
Employees
25
Accounts
4,323
Address
1906 TOWNE CENTRE BLVD
SUITE 260
ANNAPOLIS, MD 21401
Phone
(410) 573-5700
Website
Name Title / Status Ownership Type
ANSTED, RYAN, ALEXANDER ControlMEMBER
since Oct 2013
10–25%Individual
ARROWSMITH, IAN ControlMANAGING MEMBER
since Oct 2013
10–25%Individual
Corley, Reese, Michael ControlCHIEF COMPLIANCE OFFICER
since Feb 2025
Less than 5%Individual
OSTROWSKI, GREGORY, SIGISMUND ControlMEMBER
since Oct 2013
10–25%Individual
SPRINKEL, JAMES, FREDERICK ControlMEMBER
since Oct 2013
10–25%Individual
WALKER, SHAWN, JOSEPH ControlMEMBER
since Oct 2013
10–25%Individual
Ownership & leadership changes · 10 filings with changes since Dec 20, 2013

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 18, 2025 filing
  • No longer listedPAYNE, CHRISTOPHER, LEE · CHIEF COMPLIANCE OFFICER · Less than 5% · listed since Sep 2024
  • AddedCorley, Reese, Michael · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
Oct 1, 2024 filing
  • AddedPAYNE, CHRISTOPHER, LEE · CHIEF COMPLIANCE OFFICER · Less than 5%
  • ChangedARROWSMITH, IAN · title MANAGING MEMBER, CCO → MANAGING MEMBER
Sep 9, 2024 filing
  • No longer listedWASHOM, ERIN · CHIEF COMPLIANCE OFFICER · Less than 5% · listed since Jun 2024
  • ChangedARROWSMITH, IAN · title MANAGING MEMBER → MANAGING MEMBER, CCO
Jul 12, 2024 filing
  • No longer listedVEENSTRA, JILL, ANNE · CHIEF COMPLIANCE OFFICER · Less than 5% · control person · listed since Apr 2024
  • AddedWASHOM, ERIN · CHIEF COMPLIANCE OFFICER · Less than 5%
Apr 15, 2024 filing
  • No longer listedBiederman, DARA, Beth · CHIEF COMPLIANCE OFFICER · Less than 5% · listed since Mar 2024
  • AddedVEENSTRA, JILL, ANNE · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
Mar 27, 2024 filing
  • AddedBiederman, DARA, Beth · CHIEF COMPLIANCE OFFICER · Less than 5%
  • ChangedARROWSMITH, IAN · title MANAGING MEMBER / CHIEF COMPLIANCE OFFICER → MANAGING MEMBER
Apr 10, 2023 filing
  • No longer listedKIRK, KEVIN, V · CHIEF COMPLIANCE OFFICER · Less than 5% · control person · listed since Jun 2022
  • ChangedARROWSMITH, IAN · title MANAGING MEMBER → MANAGING MEMBER / CHIEF COMPLIANCE OFFICER
Aug 23, 2022 filing
  • No longer listedDAVIS, CANDICE, EZZAT · CHIEF COMPLIANCE OFFICER · Less than 5% · control person · listed since Jan 2015
  • AddedKIRK, KEVIN, V · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
Jan 6, 2015 filing
  • AddedDAVIS, CANDICE, EZZAT · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
  • ChangedARROWSMITH, IAN · title MANAGING MEMBER, CHIEF COMPLIANCE OFFICER → MANAGING MEMBER
Jul 30, 2014 filing
  • No longer listedLERRO, JAMES, EDWARD · CHIEF COMPLIANCE OFFICER · Less than 5% · control person · listed since Oct 2013
  • ChangedARROWSMITH, IAN · title MANAGING MEMBER → MANAGING MEMBER, CHIEF COMPLIANCE OFFICER
Older changes (1 more filing)
Dec 20, 2013 filing (earliest on record)
  • ListedANSTED, RYAN, ALEXANDER · MEMBER · 10–25% · control person
  • ListedARROWSMITH, IAN · MANAGING MEMBER · 10–25% · control person
  • ListedLERRO, JAMES, EDWARD · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
  • ListedOSTROWSKI, GREGORY, SIGISMUND · MEMBER · 10–25% · control person
  • ListedSPRINKEL, JAMES, FREDERICK · MEMBER · 10–25% · control person
  • ListedWALKER, SHAWN, JOSEPH · MEMBER · 10–25% · 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.

Scarborough Advisors, 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 BLACKROCK ETF TRUST INRO 09290C830 $14.8M 62.05% 403,294 SH
2 ISHARES TR SYSB 46435U796 $4.3M 17.88% 50,749 SH
3 BLACKROCK ETF TRUST IDEF 09290C699 $3.4M 14.26% 109,223 SH
4 SPDR SERIES TRUST SPYM 78464A854 $649.4K 2.71% 7,235 SH
5 BLACKROCK ETF TRUST DYNF 09290C103 $294.7K 1.23% 4,255 SH
6 SCHWAB STRATEGIC TR SCHX 808524201 $231.1K 0.97% 7,704 SH
7 BLACKROCK ETF TRUST II MBBA 092528793 $214.9K 0.90% 4,582 SH
Filing History
Period Filed AUM Holdings Accession
2026-09-30 2026-10-16 $23.9M 7 0002085853-26-001210
2026-06-30 2026-07-21 $870.9M 147 0002085853-26-000794
2026-03-31 2026-05-07 $913.6M 762 0001815355-26-000005
2025-12-31 2026-02-17 $592.4M 463 0001815355-26-000002
Filer Information
Address
1906 TOWNE CENTRE BLVD
SUITE 260
ANNAPOLIS, MD 21401
Phone
(410) 573-5700
Filing Manager
Scarborough Advisors, LLC
ANNAPOLIS, MD
Signatory
Reese Corley
Chief Compliance Officer