PENBROOK MANAGEMENT LLC
Q1 2023 Form 13-F

NEW YORK, NEW YORK
CIK 0001381055 · CRD 127269 · SEC-registered investment adviser
$130.5M Reported Value Total

PENBROOK MANAGEMENT LLC reports 188 total accounts under management (AUM). There are 188 discretionary accounts valued at $146,364,586, and 0 non-discretionary accounts.

Source: Form ADV filed * Note that certain holdings are exempt from Form 13-F reporting, so the AUM totals may be greater than the Form 13-F total.
SEC Registered Discretionary Manager
Private funds (Form ADV)
1 fund · $7.4M gross asset value
Hedge Fund: $7.4M
Source: Form ADV filed 2026-05-28
Reported value
$130.5M
Quarter over quarter
+10.3%
Holdings
95
Top-10 concentration
49.9%

Key People

Form ADV owners & control persons
Robert Stephen Anderson
MANAGING MEMBER
Barbara Ann Dicostanzo
MANAGING MEMBER, CHIEF COMPLIANCE OFFICER

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Q1 2023 13F record

Q1 2023 13F filing summary

Q1 2023 Form 13F portfolio summary
Period of report March 31, 2023
Filed April 20, 2023
Form 13F-HR
Reported value $130.5M
Positions 95
Change in reported value +11.2%
New positions 3
Exited positions 3
Position turnover 6.1%
Top-10 concentration 49.9%

13F filings by quarter

Form 13F filings by quarter
Quarter Positions Value
Q3 2026 13F
Filed Oct 16, 2026
102 $169.5M
Q2 2026 13F
Filed Jul 23, 2026
101 $156.8M
Q1 2026 13F
Filed Apr 21, 2026
93 $132.1M
Q4 2025 13F
Filed Jan 6, 2026
97 $145.0M
Q3 2025 13F
Filed Oct 22, 2025
104 $143.2M
Q2 2025 13F
Filed Jul 25, 2025
102 $133.0M
Q1 2025 13F
Filed Apr 1, 2025
107 $132.3M
Q4 2024 13F
Filed Jan 23, 2025
110 $146.6M
Q3 2024 13F
Filed Oct 15, 2024
104 $153.8M
Q2 2024 13F
Filed Jul 24, 2024
101 $163.8M
Q1 2024 13F
Filed Apr 18, 2024
102 $161.3M
Q4 2023 13F
Filed Jan 16, 2024
102 $148.8M
Q3 2023 13F
Filed Oct 10, 2023
99 $136.5M
Q2 2023 13F
Filed Jul 17, 2023
98 $138.0M
Q1 2023 13F
Filed Apr 20, 2023
95 $130.5M
Q4 2022 13F
Filed Jan 24, 2023
95 $117.3M
Q3 2022 13F
Filed Oct 31, 2022
99 $116.2M
Q2 2022 13F
Filed Jul 29, 2022
105 $126.8M
Q1 2022 13F
Filed Apr 26, 2022
109 $154.1M
Q4 2021 13F
Filed Jan 10, 2022
102 $166.0M

28 earlier quarters on file — choose one from the quarter menu above.

Top 20 holdings · Q1 2023

Largest Q1 2023 13F positions by reported value
# Holding Reported value % of portfolio
1 NVO NOVO-NORDISK A S ADR $25.3M 19.41%
2 MSFT MICROSOFT CORP $8.5M 6.5%
3 ACLS AXCELIS TECHNOLOGIES INC $6.3M 4.83%
4 AMZN AMAZON INC $5.2M 4.0%
5 MCO MOODYS CORP $4.2M 3.22%
6 TRI THOMSON REUTERS CORP NEW $3.5M 2.69%
7 CPG CRESCENT PT ENERGY CORP $3.5M 2.67%
8 RSP INVESCO S&P 500 EQUAL WEIGHT ETF $3.1M 2.4%
9 GOOG ALPHABET INC CAP STK CL C $2.7M 2.07%
10 COHU COHU INC $2.7M 2.06%
11 GOOGL ALPHABET INC CAP STK CL A $2.5M 1.88%
12 VET VERMILION ENERGY INC $2.3M 1.79%
13 USAC USA COMPRESSION PARTNERS LP UNIT LTDPAR $2.2M 1.65%
14 TRGP TARGA RES CORP $2.2M 1.65%
15 PLAB PHOTRONICS INC $2.1M 1.58%
16 NNY NUVEEN N Y MUN VALUE FD $1.9M 1.43%
17 DAIO DATA I O CORP $1.7M 1.32%
18 BX BLACKSTONE INC $1.7M 1.31%
19 AZTA AZENTA INC $1.4M 1.09%
20 ADP AUTOMATIC DATA PROCESSING INC $1.4M 1.08%

Values as reported on the Q1 2023 Form 13F. Every position is in the holdings table below.

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