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Penbrook Management Portfolio holdings

AUM $132M
1-Year Est. Return 29.91%
This Fund
S&P 500
This Quarter Est. Return
-1.08%
1 Year Est. Return
+29.91%
3 Year Est. Return
+77.31%
5 Year Est. Return
+126.31%
10 Year Est. Return
–
AUM
$132M
AUM Growth
-$12.9M
Cap. Flow
-$6.05M
Cap. Flow %
-4.58%
Top 10 Hldgs %
47.13%
Holding
105
New
8
Increased
14
Reduced
28
Closed
12

Top Buys

Rank Stock Value
1
PRTA icon
Prothena Corp
PRTA
+$2.49M
2
EXTR icon
Extreme Networks
EXTR
+$1.25M
3
CYRX icon
CryoPort
CYRX
+$1.2M
4
CURI icon
CuriosityStream
CURI
+$1.11M
5
MGNI icon
Magnite
MGNI
+$1.09M

Top Sells

Rank Stock Value
1
PL icon
Planet Labs
PL
+$4.84M
2
SYF icon
Synchrony
SYF
+$1.29M
3
AEHR icon
Aehr Test Systems
AEHR
+$1.13M
4
COHU icon
Cohu
COHU
+$891K
5
BPOP icon
Popular Inc
BPOP
+$851K

Sector Composition

Rank Sector Weight
1 Technology 23.13%
2 Healthcare 16.73%
3 Communication Services 15.08%
4 Energy 11.67%
5 Consumer Discretionary 9.18%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SONY icon
26
Sony
SONY
$124B
$1.42M 1.07%
68,500
– –
WMB icon
27
Williams Companies
WMB
$89.7B
$1.39M 1.05%
19,130
– –
MESO
28
Mesoblast
MESO
$2.24B
$1.34M 1.01%
87,075
-500
-0.6% -$8.32K
MGNI icon
29
Magnite
MGNI
$2.72B
$1.33M 1.01%
112,190
+81,075
+261% +$1.09M
ADP icon
30
Automatic Data Processing
ADP
$102B
$1.28M 0.97%
6,300
– –
EXTR icon
31
Extreme Networks
EXTR
$3.97B
$1.26M 0.95%
+83,525
New +$1.25M
HESM icon
32
Hess Midstream
HESM
$5.18B
$1.17M 0.88%
30,055
– –
ABNB icon
33
Airbnb
ABNB
$86.6B
$1.13M 0.86%
8,950
– –
ACLS icon
34
Axcelis
ACLS
$4.19B
$1.13M 0.85%
12,095
-3,800
-24% -$337K
ABBV icon
35
AbbVie
ABBV
$450B
$1.12M 0.85%
5,170
-60
-1% -$13.3K
USAC icon
36
USA Compression Partners
USAC
$3.78B
$1.11M 0.84%
41,038
– –
SPY icon
37
State Street SPDR S&P 500 ETF Trust
SPY
$782B
$1.04M 0.79%
1,605
-115
-7% -$78.2K
OKE icon
38
Oneok
OKE
$58.9B
$1.02M 0.77%
11,310
– –
DV icon
39
DoubleVerify
DV
$1.75B
$978K 0.74%
102,910
– –
NPKI
40
NPK International
NPKI
$1.21B
$974K 0.74%
67,250
– –
META icon
41
Meta Platforms (Facebook)
META
$1.64T
$973K 0.74%
1,700
– –
MRVL icon
42
Marvell Technology
MRVL
$169B
$964K 0.73%
9,730
– –
NVDA icon
43
NVIDIA
NVDA
$4.91T
$911K 0.69%
5,223
– –
DAIO icon
44
Data I/O
DAIO
$34.4M
$903K 0.68%
356,850
– –
SHEL icon
45
Shell
SHEL
$242B
$874K 0.66%
9,400
– –
NVS icon
46
Novartis
NVS
$293B
$846K 0.64%
5,540
-70
-1% -$10.7K
CVE icon
47
Cenovus Energy
CVE
$52.1B
$793K 0.6%
29,880
– –
ASUR icon
48
Asure Software
ASUR
$233M
$771K 0.58%
89,635
+400
+0.4% +$3.53K
SGOL icon
49
abrdn Physical Gold Shares ETF
SGOL
$6.85B
$765K 0.58%
17,155
– –
BPOP icon
50
Popular Inc
BPOP
$11.1B
$738K 0.56%
5,500
-6,350
-54% -$851K
1
2
3 4 5

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AIP
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DQRIM
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GCM
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Penbrook Management's Q1 2026 Portfolio in Review

As of Q1 2026, Penbrook Management held 105 positions worth $132M, down 8.9% from $145M the previous quarter. Its ten largest holdings account for 47% of the portfolio.

Penbrook Management withdrew a net $6.05M in Q1 2026, closing 12 positions and reducing 28 holdings. Its most notable exit was Synchrony, an estimated $1.29M position sold in full.

By sector, the portfolio is most concentrated in Technology at 23% of assets, down from 24% a quarter earlier, followed by Healthcare and Communication Services.

Against the trend, Penbrook Management opened a new position in Prothena Corp worth $2.64M.

  • Penbrook Management's largest Q1 2026 buy was Prothena Corp: 271,720 shares worth $2.64M.
  • Penbrook Management added most to CryoPort in Q1 2026, an estimated $1.2M increase.
  • Penbrook Management's biggest Q1 2026 reduction was Planet Labs, cutting an estimated $4.84M.
  • Penbrook Management fully exited Synchrony in Q1 2026, selling an estimated $1.29M.
  • Penbrook Management's ten largest holdings make up 47% of its $132M portfolio in Q1 2026.
  • Penbrook Management opened 8 new positions and closed 12 in Q1 2026.
  • Penbrook Management's portfolio value fell 8.9% quarter-over-quarter to $132M.

Based on Penbrook Management's 13F filing for Q1 2026, filed 21 Apr 2026.