Penbrook Management LLC

CIK 1381055 · View on SEC EDGAR ↗

Portfolio value
$156.8M
#7,244 of 9,443 by 13F value · top 76.7%
Positions
101
As of
June 30, 2026

Portfolio value QoQ: +18.7% 13F does not disclose cash

Top 10 holdings weight
45.13%
Top 25 holdings weight
67.49%
Positions above 1%
28
Effective number of positions
31.0

Based on 13F long-equity holdings only (cash, bonds, shorts not disclosed)

Turnover Q2 2026: 9.59% Est. buys $13,854,310 · sells $14,630,439

Median holding: 7.0 quarters Tracked Q4 2024–Q2 2026 · 68.2% still held

New positions
13
Increased
17
Decreased
22
Closed
5
On this page

Performance vs S&P 500

Tracked Q4 2024–Q2 2026
+27.7%
S&P 500 total return (same window)
+28.1%
Excess return
-0.4%

Annualized: +17.7% · S&P 500: +18.0%

Approximates a buy-and-hold portfolio built from quarterly SEC 13F snapshots. Excludes cash, short positions, options/derivatives, and non-13(f) securities — reflects the disclosed long-equity book only, not total fund AUM. SEC filing lag is up to 45 days; this is not a real-time-copyable timing.

Priceable coverage: 96.4% · Options excluded: 0.0%

Sector breakdown

Healthcare
19.3%
Technology
18.3%
Communication Services
14.5%
Energy
10.1%
Retail
8.0%
Industrials
7.5%
Financial Services
6.0%
Communications
3.2%
Financials
1.5%
Consumer products
0.9%
Telecommunication
0.8%
Consumer Discretionary
0.8%
Diversified Consumer Services
0.4%
Real Estate
0.3%
Other/Unmapped
8.5%

Full portfolio 101 positions

Type Streak 8Q trend
NVO Novo Nordisk A/S Common Stock $15,158,628 9.67% 316,200 $3,538,278
AMZN Amazon.com, Inc. - Common Stock $12,336,478 7.87% 51,760 $1,556,423
GOOGL Alphabet Inc. - Class A Common Stock $8,280,262 5.28% 23,170 $1,617,497
MSFT Microsoft Corporation - Common Stock $8,176,598 5.22% 21,920 $-57,833 Down ×6
GOOG Alphabet Inc. - Class C Capital Stock $7,969,004 5.08% 22,554 $1,499,164
MCO Moody's Corporation Common Stock $6,159,712 3.93% 13,600 $226,712
ELVA Electrovaya Inc. - Common Shares $3,428,818 2.19% 326,231 $1,130,151 Up ×1
CYRX CryoPort, Inc. - Common Stock $3,181,997 2.03% 202,675 $1,643,780 Up ×4
VMD Viemed Healthcare, Inc. - Common Shares $3,159,829 2.02% 277,178 $651,044 Up ×2
MRVL Marvell Technology, Inc. - Common Stock $2,898,469 1.85% 9,730 $1,934,713
PLAB Photronics, Inc. - Common Stock $2,896,959 1.85% 89,055 $-1,011,900 Down ×3
Unknown issuer (CUSIP: 811927102) $2,854,952 1.82% 110,915 Up ×1
EXTR Extreme Networks, Inc. - Common Stock $2,719,889 1.73% 84,025 $1,460,332 Up ×1
PL Planet Labs PBC Class A Common Stock $2,710,597 1.73% 81,817 $-248,469 Down ×6
PRTA Prothena Corporation plc - Ordinary Shares $2,660,138 1.70% 271,720 $19,020
ALKT Alkami Technology, Inc. - Common Stock $2,547,400 1.62% 140,585 $546,577 Up ×1
ALLT Allot Ltd. - Ordinary Shares $2,436,360 1.55% 275,295 Up ×1
CSCO Cisco Systems, Inc. - Common Stock $2,155,391 1.37% 18,350 $731,615
BX Blackstone Inc. Common Stock $2,135,710 1.36% 18,150 $48,642
MGNI Magnite, Inc. - Common Stock $2,126,519 1.36% 112,040 $793,702 Down ×1
ACLS Axcelis Technologies, Inc. - Common Stock $2,064,057 1.32% 10,895 $938,255 Down ×3
CURI CuriosityStream Inc. - Class A Common Stock $2,034,368 1.30% 764,800 $35,924 Up ×2
Unknown issuer (CUSIP: 884903881) $1,990,822 1.27% 24,381 Up ×1
NNY Nuveen New York Municipal Value Fund Common Stock $1,867,973 1.19% 213,727 $83,353
VET Vermilion Energy Inc. Common (Canada) $1,850,514 1.18% 197,825 $-867,205
TRGP Targa Resources, Inc. Common Stock $1,848,020 1.18% 6,892 $119,989
BRKB $1,646,283 1.05% 3,290 $64,923 Down ×3
BTE Baytex Energy Corp Common Shares $1,597,400 1.02% 399,350 Up ×1
ET Energy Transfer LP Common Units $1,424,229 0.91% 74,489 $-13,408
WMB Williams Companies, Inc. (The) Common Stock $1,422,124 0.91% 19,130 $29,843
ADP Automatic Data Processing, Inc. - Common Stock $1,410,885 0.90% 6,300 $130,851
DAIO Data I/O Corporation - Common Stock $1,402,049 0.89% 355,850 $499,219 Down ×1
SONY Sony Group Corporation American Depositary Shares $1,374,110 0.88% 68,500 $-43,840
ABBV AbbVie Inc. Common Stock $1,296,449 0.83% 5,152 $172,026 Down ×3
VZ Verizon Communications Inc. Common Stock $1,288,152 0.82% 30,424 $-212,777 Up ×1
ABNB Airbnb, Inc. - Class A Common Stock $1,280,745 0.82% 8,950 $150,539
SPY SPY $1,198,565 0.76% 1,605 $154,770
MESO Mesoblast Limited - American Depositary Shares $1,178,124 0.75% 87,075 $-161,089
HESM Hess Midstream LP Class A Representing Limited Partner Interests $1,130,068 0.72% 30,055 $-38,169
BLFS BioLife Solutions, Inc. - Common Stock $1,121,269 0.72% 39,705 $679,472 Up ×2
DV DoubleVerify Holdings, Inc. Common Stock $1,112,834 0.71% 102,660 $135,189 Down ×1
USAC USA Compression Partners, LP Common Units Representing Limited Partner Interests $1,082,992 0.69% 41,038 $-29,958
NPKI NPK International Inc. Common Stock $1,079,095 0.69% 67,825 $104,643 Up ×1
NVDA NVIDIA Corporation - Common Stock $1,065,079 0.68% 5,323 $154,188 Up ×1
OKE ONEOK, Inc. Common Stock $983,291 0.63% 11,310 $-39,019
META Meta Platforms, Inc. - Class A Common Stock $957,593 0.61% 1,700 $-15,028
KLIC Kulicke and Soffa Industries, Inc. - Common Stock $949,696 0.61% 7,100 $483,084
PAR PAR Technology Corporation Common Stock $936,499 0.60% 53,760 $459,619 Up ×4
BPOP Popular, Inc. - Common Stock $870,154 0.56% 5,300 $132,219 Down ×6
NVS Novartis AG Common Stock $868,228 0.55% 5,540 $21,993
BLZE Backblaze, Inc. - Common Stock $851,682 0.54% 53,700 $602,765 Down ×1
POWI Power Integrations, Inc. - Common Stock $770,592 0.49% 9,200 $299,552
EMR Emerson Electric Company Common Stock $758,695 0.48% 5,300 $64,289
CVE Cenovus Energy Inc Common Stock $741,322 0.47% 29,880 $-51,394
SHEL Shell PLC American Depositary Shares (each representing two (2) Ordinary Shares) $728,876 0.46% 9,400 $-145,324
OSS One Stop Systems, Inc. - Common Stock $706,747 0.45% 38,875 $352,926 Down ×1
ASUR Asure Software Inc - Common Stock $699,791 0.45% 88,135 $-71,070 Down ×1
WES Western Midstream Partners, LP Common Units Representing Limited Partner Interests $695,784 0.44% 15,900 $41,181
QQQ Invesco QQQ Trust, Series 1 $681,170 0.43% 925 $147,279
SGOL $652,968 0.42% 17,080 $-112,488 Down ×1
LINC Lincoln Educational Services Corporation - Common Stock $634,478 0.40% 12,715 $116,215 Down ×2
FBP First BanCorp. New Common Stock $589,182 0.38% 22,600 $87,222 Down ×3
RRC Range Resources Corporation Common Stock $529,585 0.34% 14,240 $-113,778
AEHR Aehr Test Systems - Common Stock $499,512 0.32% 5,200 $-2,448,904 Down ×4
REGN Regeneron Pharmaceuticals, Inc. - Common Stock $489,478 0.31% 785 $-117,044
TLT iShares 20+ Year Treasury Bond ETF $476,174 0.30% 5,510
PIM Putnam Master Intermediate Income Trust Common Stock $475,013 0.30% 147,063 $-5,883
PAYS Paysign, Inc. - Common Stock $469,368 0.30% 57,310 $140,237 Up ×2
HTGC Hercules Capital, Inc. Common Stock $463,447 0.30% 29,387 $240,997 Up ×2
AAPL Apple Inc. - Common Stock $442,431 0.28% 1,529 $54,387
EPD Enterprise Products Partners L.P. Common Stock $420,056 0.27% 11,427 $-12,341
DMLP Dorchester Minerals, L.P. - Common Units Representing Limited Partnership Interests $409,681 0.26% 16,225 $-30,016
FNF Fidelity National Financial, Inc. Common Stock $408,782 0.26% 8,668 $-16,429 Down ×6
KOPN Kopin Corporation - Common Stock $395,472 0.25% 88,275 $137,679 Down ×3
BMY Bristol-Myers Squibb Company Common Stock $381,156 0.24% 6,615 $2,094 Up ×1
AMPL Amplitude, Inc. - Class A Common Stock $372,593 0.24% 48,705 Up ×1
RITM Rithm Capital Corp. Common Stock $368,088 0.23% 39,200 Up ×1
IBM International Business Machines Corporation Common Stock $360,792 0.23% 1,283 $49,806
RSP $355,325 0.23% 1,670 $34,819
TTI Tetra Technologies, Inc. Common Stock $297,525 0.19% 26,260 $72,512 Down ×3
TER Teradyne, Inc. - Common Stock $290,304 0.19% 600 Up ×1
SPYM $270,231 0.17% 3,075 $26,834 Down ×3
IOVA Iovance Biotherapeutics, Inc. - Common Stock $257,691 0.16% 61,945 $108,710 Up ×2
UTG $249,410 0.16% 6,125 $8,820
WLY John Wiley & Sons, Inc. Common Stock $242,550 0.15% 5,000
JEPI $238,628 0.15% 4,225 $-845
GBDC Golub Capital BDC, Inc. - Closed End Fund $232,612 0.15% 18,060 $46,764 Up ×1
CVX Chevron Corporation Common Stock $228,251 0.15% 1,377 $-56,650
AM Antero Midstream Corporation Common Stock $225,225 0.14% 9,900 $-495
MRK Merck & Company, Inc. Common Stock (new) $218,450 0.14% 1,700 $13,957
JPM JP Morgan Chase & Co. Common Stock $216,037 0.14% 660
COP ConocoPhillips Common Stock $210,519 0.13% 2,025 $-56,781
FAF First American Corporation (New) Common Stock $205,770 0.13% 3,000
VKQ Invesco Municipal Trust Common Stock $200,800 0.13% 20,000 $10,400
SKYH Sky Harbour Group Corporation Class A Common Stock $192,175 0.12% 19,530 Up ×1
BNED Barnes & Noble Education, Inc Common Stock $188,400 0.12% 15,000 Up ×1
NUV Nuveen Municipal Value Fund, Inc. Common Stock $184,400 0.12% 20,000 $4,600
AQST Aquestive Therapeutics, Inc. - Common Stock $180,128 0.11% 43,300 $74,034 Up ×1
DX Dynex Capital, Inc. Common Stock $131,755 0.08% 10,050 $3,517
ONDS Ondas Inc - Common Stock $82,441 0.05% 10,005 $-8,004

Conviction holdings

Positions increased for 3+ consecutive quarters.

Share counts are as reported in 13F filings (not split-adjusted)

Security Value % of portfolio Streak
CYRX $3,181,997 2.03% up ×4
PAR $936,499 0.60% up ×4

Biggest new bets

New positions opened this quarter, largest first.

Security Value Shares % of portfolio
Unknown issuer (CUSIP: 811927102) $2,854,952 110,915 1.82%
ALLT $2,436,360 275,295 1.55%
Unknown issuer (CUSIP: 884903881) $1,990,822 24,381 1.27%
BTE $1,597,400 399,350 1.02%
TLT $476,174 5,510 0.30%
AMPL $372,593 48,705 0.24%
RITM $368,088 39,200 0.23%
TER $290,304 600 0.19%
WLY $242,550 5,000 0.15%
JPM $216,037 660 0.14%
FAF $205,770 3,000 0.13%
SKYH $192,175 19,530 0.12%
BNED $188,400 15,000 0.12%

Top movers (QoQ)

Security Action Shares Δ Value Δ
NVO Price move only +0 +$3.5M
MRVL Price move only +0 +$1.9M
CYRX Bought more +17K +$1.6M
GOOGL Price move only +0 +$1.6M
AMZN Price move only +0 +$1.6M
GOOG Price move only +0 +$1.5M
EXTR Bought more +500 +$1.5M
ELVA Bought more +31K +$1.1M
PLAB Trimmed -8K -$1.0M
ACLS Trimmed -1K +$938K

1 position hidden (data completeness check)

Exited positions

Includes corporate events (mergers, delistings) — not all exits are sells

Closed positions reflect 13F reporting changes; for index managers these are often mechanical (delisting, M&A, index rebalancing), not active decisions.

SecurityQuarter Shares before Value before Price since exit
VRN Sept. 30, 2025 441,125 $2,918,130 No longer tracked
SA June 30, 2026 95,990 $2,720,356 30.1%
TRI June 30, 2026 24,774 $2,229,164 30.7%
COOP Sept. 30, 2025 15,825 $1,892,670 No longer tracked
SYF March 31, 2026 15,500 $1,293,165 12.4%
COHU March 31, 2026 38,300 $891,241 75.8%
SKY March 31, 2025 8,585 $756,339 -4.7%
NVGS Sept. 30, 2025 50,400 $713,160 40.8%
NU Sept. 30, 2025 50,065 $686,891 -9.3%
IVAC March 31, 2025 148,780 $505,852 No longer tracked
IBB Sept. 30, 2025 3,240 $414,396 47.7%
T Sept. 30, 2025 14,455 $408,787 -10.6%
GPN March 31, 2026 5,115 $395,901 37.5%
WMT March 31, 2025 3,821 $345,227 18.8%
BLDR Dec. 31, 2025 2,741 $332,346 -31.7%
ORI Sept. 30, 2025 8,480 $325,971 -1.7%
PUBM Sept. 30, 2025 35,445 $323,967 99.2%
BBSI March 31, 2026 8,800 $318,648 13.4%
CVS Sept. 30, 2025 4,275 $294,889 24.7%
IREN Dec. 31, 2025 6,200 $290,966 12.0%
ARCC Sept. 30, 2025 12,740 $279,770 -2.6%
MRK March 31, 2025 2,706 $269,193 67.6%
FAF March 31, 2026 4,300 $264,192 19.5%
WBS March 31, 2026 4,180 $263,089 11.7%
BDX Sept. 30, 2025 1,115 $255,402 27.4%
INVE Dec. 31, 2025 73,594 $253,899 -25.5%
MP Sept. 30, 2025 7,210 $239,876 -19.7%
TLT Sept. 30, 2025 2,595 $236,223
XOM June 30, 2026 1,280 $217,164 22.5%
AFL March 31, 2026 1,950 $215,027 5.7%
FIS March 31, 2026 3,224 $214,267 -13.3%
COP Sept. 30, 2025 2,025 $212,666 42.6%
JPM March 31, 2026 660 $212,665 20.7%
JPC Dec. 31, 2025 25,710 $210,822 -6.5%
NKE June 30, 2026 3,960 $209,167 -1.1%
WLY Dec. 31, 2025 5,000 $202,350 70.2%
TFPM March 31, 2026 6,089 $202,277 -5.5%
PBI Dec. 31, 2025 17,050 $194,540 52.8%
OESX Dec. 31, 2025 16,644 $145,801 18.5%
F Sept. 30, 2025 11,500 $124,775 16.9%
OESXXXXX Sept. 30, 2025 179,925 $107,972 No longer tracked
ASPN Dec. 31, 2025 14,180 $98,692 90.8%
UAMY Dec. 31, 2025 14,825 $91,915 6.9%
EOSE March 31, 2025 16,500 $80,190 -4.5%
INDI March 31, 2025 19,000 $76,950 90.2%
BTQ March 31, 2026 10,570 $54,118 36.7%
MIN March 31, 2026 18,750 $48,938 -1.4%
XGN June 30, 2026 13,330 $39,990 63.7%
TUSK Sept. 30, 2025 13,000 $36,400 36.2%
ONDS March 31, 2025 11,000 $28,160 691.6%
DEFT Dec. 31, 2025 10,800 $22,788 -33.2%
CISO Dec. 31, 2025 14,270 $14,983 -50.8%
SPGC March 31, 2025 20,000 $8,398 No longer tracked
OPTT Dec. 31, 2025 15,000 $7,555 No longer tracked