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MOUNT VERNON ASSOCIATES INC /MD/ — 13F Holdings & Portfolio

CIK 799003 · latest 13F-HR filed 2026-10-26

Backtest portfolio

MOUNT VERNON ASSOCIATES INC /MD/ manages $150.4M in 13F-reported U.S. long-equity assets across 58 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are AAPL (11.64%), GOOG (8.19%), MSFT (7.07%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 1 new position and exited 5; 15 existing positions rose in reported value and 33 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
$150.4M

Long-equity book

Holdings
58

Distinct positions

Period
2026-09-30

Filed 2026-10-26

Q/Q Activity
+1 / −5 / ↑15 / ↓33

vs 2026-06-30

Portfolio charts

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

Portfolio map

Q3 26
AAPL11.6% · -6%GOOG8.2% · -4%MSFT7.1% · -5%AMZN6.5% · -4%META5.8% · -3%COST5.3% · -4%JPM4.8% · -5%INTC3.6% · -2%AXP3.5% · -3%BAC2.6% · -4%CSCO2.5% · -6%AFRM2.4% · +22%GE2.2% · -5%SPOT2.1% · -0%DAL2.0% · -3%NFLX1.8% · -1%SCHW1.8% · -1%UBER1.8% · -2%TXN1.8% · -7%NVDA1.6% · +16%TSLA1.4% · +2%MU1.3% · 0%TSCO1.2% · -6%PPL1.2% · -6%BMY1.2% · -0%SBUX1.2% · -7%CSX1.1% · -4%SPCX0.9% · newABNB0.8% · 0%HON0.8% · -4%TREX0.7% · -6%LLY0.7% · 0%PFE0.7% · -4%IBM0.7% · -8%GEHC0.6% · -8%HONA0.6% · -4%VZ0.5% · -3%C0.5% · -8%CAT0.4% · 0%XOM0.4% · -9%T0.4% · -6%JNJ0.4% · -0%CMPS0.4% · +20%AMD0.4% · 0%HIG0.3% · -8%DD0.2% · -4%NVR0.2% · 0%PNC0.2% · -2%COF0.2% · -17%PM0.2% · 0%HD0.2% · 0%WH0.1% · -9%IREN0.1% · 0%PG0.1% · 0%GOOGL0.1% · -2%ANNX0.0% · 0%TKOI0.0% · -5%

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 = 59.1%

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

Firm Profile & Key People

As of the firm’s regulatory filing dated Feb 18, 2026.

Assets Under Management
$232.5M
Discretionary
$232.5M
Employees
3
Accounts
121
Address
575 S CHARLES STREET, STE 401
BALTIMORE, MD 21201
Phone
(410) 377-9780
Website
Name Title / Status Ownership Type
O'HARA, NANCY, VAN DYKE ControlVICE PRESIDENT/CHIEF COMPLIANCE OFFICER/TREASURER
since Feb 2008
25–50%Individual
SULLIVAN, MARK, CARLSON ControlPRESIDENT
since Dec 2010
50–75%Individual
Ownership & leadership changes · 4 filings with changes since Mar 5, 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 18, 2026 filing
  • No longer listedCAIN, SILAS, WINFIELD · CHAIRMAN · Less than 5% · control person · listed since Dec 2010
Mar 19, 2018 filing
  • No longer listedCAIN, KEVIN, TAYLOR · VICE PRESIDENT · Less than 5% · control person · listed since Jan 1996
  • ChangedCAIN, SILAS, WINFIELD · ownership 25–50% → Less than 5%
  • ChangedO'HARA, NANCY, VAN DYKE · title VICE PRESIDENT/CHIEF COMPLIANCE OFFICER → VICE PRESIDENT/CHIEF COMPLIANCE OFFICER/TREASURER; ownership 10–25% → 25–50%
Feb 17, 2016 filing
  • ChangedCAIN, SILAS, WINFIELD · ownership 50–75% → 25–50%
  • ChangedO'HARA, NANCY, VAN DYKE · ownership 5–10% → 10–25%
  • ChangedSULLIVAN, MARK, CARLSON · ownership 10–25% → 50–75%
Jul 23, 2015 filing
  • ChangedCAIN, SILAS, WINFIELD · ownership 75% or more → 50–75%
Mar 5, 2012 filing (earliest on record)
  • ListedCAIN, KEVIN, TAYLOR · VICE PRESIDENT · Less than 5% · control person
  • ListedCAIN, SILAS, WINFIELD · CHAIRMAN · 75% or more · control person
  • ListedO'HARA, NANCY, VAN DYKE · VICE PRESIDENT/CHIEF COMPLIANCE OFFICER · 5–10% · control person
  • ListedSULLIVAN, MARK, CARLSON · PRESIDENT · 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.

Top Adds (vs prior quarter)

Show all 15 →

Top Trims

Show all 33 →

New Positions

Show all 1 →

Exited Positions

Show all 5 →

MOUNT VERNON ASSOCIATES INC /MD/ 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 Apple Inc. AAPL 037833100 $17.5M 11.64% 52,565 SH
2 Alphabet Inc. Cl C GOOG 02079K107 $12.3M 8.19% 36,137 SH
3 Microsoft Corporation MSFT 594918104 $10.6M 7.07% 20,741 SH
4 Amazon.Com Inc. AMZN 023135106 $9.7M 6.47% 39,085 SH
5 Meta Platforms, Inc META 30303M102 $8.7M 5.80% 12,026 SH
6 Costco Wholesale Corp COST 22160K105 $8.0M 5.34% 8,827 SH
7 J.P. Morgan Chase & Co Chase & JPM 46625H100 $7.2M 4.82% 21,904 SH
8 Intel Corporation INTC 458140100 $5.4M 3.61% 45,111 SH
9 American Express Co. AXP 025816109 $5.3M 3.52% 17,412 SH
10 Bank Of America Corp BAC 060505104 $4.0M 2.65% 73,119 SH
11 Cisco Systems Inc. CSCO 17275R102 $3.8M 2.55% 35,604 SH
12 Affirm Holdings, Inc. AFRM 00827B106 $3.6M 2.39% 51,825 SH
13 GE Aerospace GE 369604103 $3.4M 2.25% 10,823 SH
14 Spotify Technology S.A. SPOT L8681T102 $3.2M 2.10% 6,470 SH
15 Delta Air Lines, Inc. DAL 247361702 $3.0M 1.98% 35,600 SH
16 Netflix Inc. NFLX 64110L106 $2.8M 1.85% 39,950 SH
17 Schwab (Charles) Corp SCHW 808513105 $2.7M 1.80% 27,625 SH
18 Uber Technologies, Inc. UBER 90353T100 $2.7M 1.79% 39,380 SH
19 Texas Instruments, Inc. TXN 882508104 $2.7M 1.78% 9,580 SH
20 Nvidia Corp NVDA 67066G104 $2.5M 1.65% 10,859 SH
21 Tesla Motors Inc. TSLA 88160R101 $2.0M 1.35% 5,745 SH
22 Micron Technology Inc MU 595112103 $1.9M 1.27% 1,800 SH
23 Tractor Supply Co. TSCO 892356106 $1.9M 1.25% 60,070 SH
24 PPL Corporation PPL 69351T106 $1.9M 1.23% 56,450 SH
25 Bristol-Myers Squibb Co. BMY 110122108 $1.8M 1.22% 29,379 SH
26 Starbucks Corporation SBUX 855244109 $1.8M 1.21% 19,352 SH
27 CSX Corporation CSX 126408103 $1.7M 1.15% 37,100 SH
28 Space Exploration Technologies SPCX 84615Q103 $1.3M 0.86% 8,550 SH
29 Airbnb, Inc. ABNB 009066101 $1.3M 0.84% 7,895 SH
30 Honeywell Intl Inc HON 438516205 $1.2M 0.77% 5,513 SH
31 Trex Company, Inc. TREX 89531P105 $1.1M 0.72% 24,850 SH
32 Eli Lilly & Co. LLY 532457108 $1.1M 0.71% 920 SH
33 Pfizer Inc. PFE 717081103 $1.1M 0.71% 37,319 SH
34 IBM Corp IBM 459200101 $1.0M 0.69% 4,745 SH
35 Ge Healthcare Technologies GEHC 36266G107 $976.0K 0.65% 14,924 SH
36 Honeywell Aerospace Inc. HONA 43849R105 $854.0K 0.57% 5,513 SH
37 Verizon Communications, Inc. VZ 92343V104 $825.0K 0.55% 17,975 SH
38 Citigroup, Inc. C 172967424 $799.0K 0.53% 6,170 SH
39 Caterpillar Inc CAT 149123101 $649.0K 0.43% 800 SH
40 ExxonMobil Holdings Corporatio XOM 30231G102 $646.0K 0.43% 3,972 SH
41 AT&T Inc. T 00206R102 $636.0K 0.42% 26,055 SH
42 Johnson & Johnson JNJ 478160104 $572.0K 0.38% 2,161 SH
43 Compass Pathways PLC CMPS 20451W101 $566.0K 0.38% 45,500 SH
44 Advanced Micro Device In AMD 007903107 $541.0K 0.36% 885 SH
45 Hartford Financial Services HIG 416515104 $513.0K 0.34% 4,190 SH
46 Dupont De Nemours & Co. DD 263534109 $310.0K 0.21% 2,386 SH
47 NVR,inc. NVR 62944T105 $308.0K 0.20% 50 SH
48 PNC Financial Services PNC 693475105 $300.0K 0.20% 1,350 SH
49 Capital One Financial Corp. COF 14040H105 $290.0K 0.19% 1,500 SH
50 Philip Morris Intl PM 718172109 $248.0K 0.16% 1,300 SH
Filing History
Period Filed AUM Holdings Accession
2026-09-30 2026-10-26 $150.4M 58 0000799003-26-000004
2026-06-30 2026-07-24 $153.4M 62 0000799003-26-000003
2026-03-31 2026-04-28 $141.5M 60 0000799003-26-000002
2025-12-31 2026-01-22 $148.7M 60 0000799003-26-000001
Filer Information
Address
575 SOUTH CHARLES STREET
SUITE 401
BALTIMORE, MD 21201
Phone
(410) 377-9780
Filing Manager
MOUNT VERNON ASSOCIATES INC /MD/
BALTIMORE, MD
Signatory
Nancy O'Hara
VICE PRESIDENT