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GUYASUTA INVESTMENT ADVISORS INC — 13F Holdings & Portfolio

CIK 928568 · latest 13F-HR filed 2026-10-15

Backtest portfolio

GUYASUTA INVESTMENT ADVISORS INC manages $1.91B in 13F-reported U.S. long-equity assets across 271 reported positions as of its 2026-09-30 13F-HR filing. Its largest disclosed positions are MSFT (6.93%), GOOG (6.31%), BRK.B (4.67%). Quarter over quarter (versus its 2026-06-30 filing) the fund opened 11 new positions and exited 17; 61 existing positions rose in reported value and 114 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
$1.91B

Long-equity book

Holdings
271

Distinct positions

Period
2026-09-30

Filed 2026-10-15

Q/Q Activity
+11 / −17 / ↑61 / ↓114

vs 2026-06-30

Portfolio charts

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

Portfolio map

Q3 26
MSFT6.9% · -1%GOOG6.3% · -1%BRK.B4.7% · -0%MA4.3% · -1%TMO4.0% · -2%RSG3.8% · -0%TEL3.3% · +1%PNC2.9% · 0%TSM2.8% · -1%CVX2.8% · -1%VST2.6% · -0%ASML2.4% · -7%PWR2.3% · -2%AMAT2.3% · -23%LIN2.3% · +0%AMZN2.1% · -1%WCC2.0% · -1%LOW1.7% · +2%TXN1.7% · -0%NVDA1.6% · +1%AAPL1.6% · -0%PANW1.6% · -1%BDX1.4% · -3%MCD1.4% · +5%JNJ1.4% · -3%META1.1% · -1%FERG1.0% · +0%WMT1.0% · +5%COR0.9% · -0%EXP0.9% · +2%XOM0.8% · -2%VMC0.7% · +4%LLY0.7% · +359%PG0.7% · -1%CAT0.7% · -0%PEP0.6% · -6%ADP0.6% · -2%EMR0.6% · -1%KO0.6% · -1%JPM0.5% · -4%IBM0.5% · -6%GOOGL0.5% · -5%ULTA0.5% · +0%MRK0.5% · -7%SPY0.4% · +7%CLS0.4% · -4%ABBV0.4% · -5%IVV0.4% · -1%MU0.4% · -2%VTI0.4% · -1%HD0.3% · -3%PKG0.3% · -3%VCSH0.3% · 0%PM0.3% · +0%BRK.A0.3% · 0%PPG0.3% · -2%IWB0.3% · 0%GE0.3% · -0%UL0.2% · -10%VUG0.2% · +6%

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 = 41.8%

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

Firm Profile & Key People

As of the firm’s regulatory filing dated Feb 4, 2026.

Assets Under Management
$2.44B
Discretionary
$2.44B
Employees
13
Accounts
1,389
Address
285 KAPPA DRIVE
SUITE 220
PITTSBURGH, PA 15238
Phone
(412) 447-4560
Website
Name Title / Status Ownership Type
BARTOSH, RONALD, LEWIS ControlPARTNER & CHIEF COMPLIANCE OFFICER
since Jan 2025
5–10%Individual
BEUKEMA, HENRY, SHAW ControlCHAIRMAN & CEO
since Jan 2026
25–50%Individual
MAGOVERN, PAUL, JAMES ControlPARTNER
since Jan 2026
25–50%Individual
TODD, JEFFREY, BATON ControlPARTNER
since Jan 2026
25–50%Individual
Ownership & leadership changes · 13 filings with changes since Mar 30, 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 4, 2026 filing
  • No longer listedMADISON, ALBERT, HENRY · PARTNER · 10–25% · control person · listed since Jan 2021
  • ChangedBEUKEMA, HENRY, SHAW · ownership 10–25% → 25–50%
  • ChangedMAGOVERN, PAUL, JAMES · ownership 10–25% → 25–50%
  • ChangedTODD, JEFFREY, BATON · ownership 10–25% → 25–50%
Feb 20, 2025 filing
  • No longer listedFOSTER, NANCY, BRADSHAW · PRESIDENT · 5–10% · control person · listed since Jan 2024
  • ChangedBARTOSH, RONALD, LEWIS · ownership Less than 5% → 5–10%
Feb 27, 2024 filing
  • No longer listedTEPLITZ, MATTHEW, JAY · PARTNER · 5–10% · control person · listed since Jan 2023
  • ChangedFOSTER, NANCY, BRADSHAW · ownership 10–25% → 5–10%
Apr 20, 2023 filing
  • ChangedTEPLITZ, MATTHEW, JAY · ownership 10–25% → 5–10%
Feb 19, 2021 filing
  • ChangedMADISON, ALBERT, HENRY · ownership 5–10% → 10–25%
Mar 27, 2020 filing
  • AddedMADISON, ALBERT, HENRY · PARTNER · 5–10% · control person
  • ChangedTODD, JEFFREY, BATON · ownership 5–10% → 10–25%
Mar 6, 2019 filing
  • No longer listedMEYER, RICHARD, BATON · VICE CHAIRMAN · 5–10% · control person · listed since Jan 2018
  • ChangedBEUKEMA, HENRY, SHAW · ownership 25–50% → 10–25%
  • ChangedFOSTER, NANCY, BRADSHAW · ownership 25–50% → 10–25%
  • ChangedMAGOVERN, PAUL, JAMES · ownership 5–10% → 10–25%
  • ChangedTEPLITZ, MATTHEW, JAY · ownership 25–50% → 10–25%
  • ChangedTODD, JEFFREY, BATON · ownership Less than 5% → 5–10%
Mar 1, 2018 filing
  • AddedTODD, JEFFREY, BATON · PARTNER · Less than 5% · control person
  • ChangedMAGOVERN, PAUL, JAMES · ownership Less than 5% → 5–10%
  • ChangedMEYER, RICHARD, BATON · ownership 10–25% → 5–10%
Mar 29, 2017 filing
  • AddedMAGOVERN, PAUL, JAMES · PARTNER · Less than 5% · control person
  • ChangedBEUKEMA, HENRY, SHAW · ownership 10–25% → 25–50%
  • ChangedFOSTER, NANCY, BRADSHAW · ownership 10–25% → 25–50%
  • ChangedTEPLITZ, MATTHEW, JAY · ownership 10–25% → 25–50%
Mar 15, 2016 filing
  • ChangedBEUKEMA, HENRY, SHAW · title PRESIDENT → CHAIRMAN & CEO
  • ChangedFOSTER, NANCY, BRADSHAW · title PARTNER → PRESIDENT
  • ChangedMEYER, RICHARD, BATON · title CHAIRMAN & CEO → VICE CHAIRMAN
Older changes (4 more filings)
Aug 19, 2013 filing
  • ChangedBEUKEMA, HENRY, SHAW · ownership 25–50% → 10–25%
  • ChangedFOSTER, NANCY, BRADSHAW · ownership 25–50% → 10–25%
  • ChangedMEYER, RICHARD, BATON · ownership 25–50% → 10–25%
Aug 21, 2012 filing
  • AddedTEPLITZ, MATTHEW, JAY · PARTNER · 10–25% · control person
May 14, 2012 filing
  • No longer listedMATHIESON, PETER, FERRIS · PRESIDENT · 10–25% · control person · listed since Feb 2012
  • ChangedBEUKEMA, HENRY, SHAW · title PARTNER → PRESIDENT; ownership 10–25% → 25–50%
  • ChangedFOSTER, NANCY, BRADSHAW · ownership 10–25% → 25–50%
  • ChangedMEYER, RICHARD, BATON · ownership 10–25% → 25–50%
Mar 30, 2012 filing (earliest on record)
  • ListedBARTOSH, RONALD, LEWIS · PARTNER & CHIEF COMPLIANCE OFFICER · Less than 5% · control person
  • ListedBEUKEMA, HENRY, SHAW · PARTNER · 10–25% · control person
  • ListedFOSTER, NANCY, BRADSHAW · PARTNER · 10–25% · control person
  • ListedMATHIESON, PETER, FERRIS · PRESIDENT · 10–25% · control person
  • ListedMEYER, RICHARD, BATON · CHAIRMAN & CEO · 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 61 →

Top Trims

Show all 114 →

New Positions

Show all 11 →

Exited Positions

Show all 17 →

GUYASUTA INVESTMENT ADVISORS INC 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 MICROSOFT CORP MSFT 594918104 $132.4M 6.93% 258,060 SH
2 ALPHABET INC GOOG 02079K107 $120.5M 6.31% 353,711 SH
3 BERKSHIRE HATHAWAY INC DEL BRK.B 084670702 $89.2M 4.67% 179,155 SH
4 MASTERCARD INCORPORATED MA 57636Q104 $82.0M 4.29% 148,630 SH
5 THERMO FISHER SCIENTIFIC INC TMO 883556102 $76.6M 4.01% 113,471 SH
6 REPUBLIC SVCS INC RSG 760759100 $72.8M 3.81% 346,671 SH
7 TE CONNECTIVITY PLC TEL G87052109 $62.4M 3.27% 295,744 SH
8 PNC FINL SVCS GROUP INC PNC 693475105 $55.8M 2.92% 251,005 SH
9 TAIWAN SEMICONDUCTOR MANUFAC TSM 874039100 $53.5M 2.80% 117,280 SH
10 CHEVRON CORPORATION CVX 166764100 $53.0M 2.77% 259,357 SH
11 VISTRA CORP VST 92840M102 $50.4M 2.64% 364,074 SH
12 ASML HLDG NV ASML N07059210 $45.3M 2.37% 25,000 SH
13 QUANTA SVCS INC PWR 74762E102 $44.6M 2.33% 69,345 SH
14 APPLIED MATLS INC AMAT 038222105 $43.2M 2.26% 84,485 SH
15 LINDE PLC LIN G54950103 $43.1M 2.26% 90,825 SH
16 AMAZON COM INC AMZN 023135106 $40.7M 2.13% 163,535 SH
17 WESCO INTL INC WCC 95082P105 $38.6M 2.02% 107,218 SH
18 LOWES COS INC LOW 548661107 $33.4M 1.75% 181,150 SH
19 TEXAS INSTRS INC TXN 882508104 $32.2M 1.69% 114,970 SH
20 NVIDIA CORPORATION NVDA 67066G104 $30.8M 1.61% 134,947 SH
21 APPLE INC AAPL 037833100 $30.3M 1.59% 91,052 SH
22 PALO ALTO NETWORKS INC PANW 697435105 $29.7M 1.56% 74,847 SH
23 BECTON DICKINSON & CO BDX 075887109 $27.6M 1.45% 154,195 SH
24 MCDONALDS CORP MCD 580135101 $26.6M 1.39% 115,082 SH
25 JOHNSON & JOHNSON JNJ 478160104 $26.3M 1.38% 99,503 SH
26 META PLATFORMS INC META 30303M102 $21.2M 1.11% 29,214 SH
27 FERGUSON ENTERPRISES INC FERG 31488V107 $18.6M 0.97% 83,468 SH
28 WALMART INC WMT 931142103 $18.5M 0.97% 178,090 SH
29 CENCORA INC COR 03073E105 $16.9M 0.88% 56,288 SH
30 EAGLE MATLS INC EXP 26969P108 $16.8M 0.88% 98,366 SH
31 EXXONMOBIL HOLDINGS CORP XOM 30233Q108 $16.0M 0.84% 98,252 SH
32 VULCAN MATLS CO VMC 929160109 $14.1M 0.74% 57,760 SH
33 ELI LILLY & CO LLY 532457108 $13.7M 0.72% 11,817 SH
34 PROCTER & GAMBLE CO PG 742718109 $12.7M 0.67% 87,622 SH
35 CATERPILLAR INC CAT 149123101 $12.6M 0.66% 15,516 SH
36 PEPSICO INC PEP 713448108 $11.9M 0.62% 94,180 SH
37 AUTOMATIC DATA PROCESSING IN ADP 053015103 $11.9M 0.62% 46,192 SH
38 EMERSON ELEC CO EMR 291011104 $11.8M 0.62% 76,254 SH
39 COCA COLA CO KO 191216100 $11.1M 0.58% 128,642 SH
40 JPMORGAN CHASE & CO JPM 46625H100 $10.3M 0.54% 31,165 SH
41 INTERNATIONAL BUSINESS MACHS IBM 459200101 $9.8M 0.51% 44,444 SH
42 ALPHABET INC GOOGL 02079K305 $9.8M 0.51% 28,338 SH
43 ULTA BEAUTY INC ULTA 90384S303 $9.6M 0.50% 17,521 SH
44 MERCK & CO INC MRK 58933Y105 $8.9M 0.47% 61,219 SH
45 STATE STR SPDR S&P 500 ETF T SPY 78462F103 $8.0M 0.42% 10,437 SH
46 CELESTICA INC CLS 15101Q207 $7.4M 0.39% 20,422 SH
47 ABBVIE INC ABBV 00287Y109 $7.1M 0.37% 27,020 SH
48 ISHARES TR IVV 464287200 $7.0M 0.37% 9,125 SH
49 MICRON TECHNOLOGY INC MU 595112103 $6.8M 0.35% 6,341 SH
50 VANGUARD INDEX FDS VTI 922908769 $6.7M 0.35% 17,994 SH
Filing History
Period Filed AUM Holdings Accession
2026-09-30 2026-10-15 $1.91B 271 0000928568-26-000004
2026-06-30 2026-07-20 $1.94B 277 0000928568-26-000003
2026-03-31 2026-04-17 $1.73B 269 0000928568-26-000002
2025-12-31 2026-01-23 $1.75B 265 0000928568-26-000001
Filer Information
Address
285 KAPPA DRIVE
SUITE 220
PITTSBURGH, PA 15238
Phone
(412) 447-4560
Filing Manager
GUYASUTA INVESTMENT ADVISORS INC
PITTSBURGH, PA
Signatory
Ronald L Bartosh Jr
Chief Compliance Officer