Skip to main content
Livermore
Livermore
ZHEN

Penbrook Management LLC

SEC CIK
0001381055
Latest filing
Jul 23, 2026

Holdings in Q2 2025

Holdings as of Jun 30, 2025, filed Jul 28, 2025. Long positions only; changes compare share counts with Q1 2025.

Institution overview
Positions
102
−5 vs. Q1 2025
Portfolio value
$133.0M
+$691.1K (+0.5%) vs. Q1 2025
Filed
Jul 28, 2025
AmendedSEC
Holdings of Penbrook Management LLC in Q2 2025
SecurityClassSharesValue% of portfolioShare changeActionHistory
NVONovo Nordisk A SADR311,400$21.5M16.2%00.0%UnchangedHistory
MSFTMicrosoft CorpStock24,980$12.4M9.3%−1,027−3.9%ReducedHistory
AMZNAmazon Com IncStock51,355$11.3M8.5%−885−1.7%ReducedHistory
MCOMoodys CorpStock13,650$6.85M5.1%00.0%UnchangedHistory
TRIThomson Reuters CorpCOM NO PAR24,848$4.99M3.8%00.0%UnchangedHistory
GOOGAlphabet Inc.Stock24,720$4.39M3.3%00.0%UnchangedHistory
GOOGLAlphabet Inc.Stock23,170$4.08M3.1%00.0%UnchangedHistory
BXBlackstone Inc.COM14,900$2.23M1.7%−600−3.9%ReducedHistory
TRGPTarga Resources Corp.COM12,201$2.12M1.6%−250−2.0%ReducedHistory
PLPlanet Labs PBCCOM CL A337,870$2.06M1.5%−44,485−11.6%ReducedHistory
PLABPhotronics IncCOM106,430$2.00M1.5%+14,385+15.6%AddedHistory
ADPAutomatic Data Processing IncStock6,300$1.94M1.5%00.0%UnchangedHistory
SONYSony Group CorpSPONSORED ADR68,500$1.78M1.3%00.0%UnchangedHistory
NNYNuveen New York Municipal Value FundCOM213,727$1.73M1.3%00.0%UnchangedHistory
AEHRAehr Test SystemsCOM126,250$1.63M1.2%+84,875+205.1%AddedHistory
BRK.BBerkshire Hathaway IncStock3,100$1.51M1.1%−480−13.4%ReducedHistory
ETEnergy Transfer LPCOM UT LTD PTN82,340$1.49M1.1%−1,125−1.3%ReducedHistory
FNFFidelity National Financial, Inc.COM SHS26,021$1.46M1.1%−1,038−3.8%ReducedHistory
BPOPPopular, Inc.COM NEW13,150$1.45M1.1%−300−2.2%ReducedHistory
SASeabridge Gold IncCOM96,545$1.40M1.1%−2,650−2.7%ReducedHistory
VZVerizon Communications IncStock31,935$1.38M1.0%−2,936−8.4%ReducedHistory
VETVermilion Energy Inc.COM181,275$1.32M1.0%−1,125−0.6%ReducedHistory
SYFSynchrony FinancialCOM19,350$1.29M1.0%−450−2.3%ReducedHistory
CSCOCisco Systems, Inc.Stock18,350$1.27M1.0%00.0%UnchangedHistory
METAMeta Platforms, Inc.Stock1,700$1.25M0.9%00.0%UnchangedHistory
VMDViemed Healthcare, Inc.COM180,020$1.24M0.9%−26,557−12.9%ReducedHistory
WMBWilliams Companies, Inc.COM19,730$1.24M0.9%00.0%UnchangedHistory
SPYSPDR S&P 500 ETF TrustETF1,915$1.18M0.9%−250−11.5%ReducedHistory
ACLSAxcelis Technologies IncStock16,895$1.18M0.9%−2,745−14.0%ReducedHistory
ABNBAirbnb, Inc.Stock8,850$1.17M0.9%00.0%UnchangedHistory
ALKTAlkami Technology, Inc.Stock38,795$1.17M0.9%−2,615−6.3%ReducedHistory
FBPFirst BancorpCOM NEW52,600$1.10M0.8%−2,000−3.7%ReducedHistory
DAIOData I/O CorpCOM349,750$1.08M0.8%+80,300+29.8%AddedHistory
Invesco QQQ Trust Series I46090E103ETF1,945$1.07M0.8%−100−4.9%Reduced–
ELVAElectrovaya Inc.COM NEW308,111$1.05M0.8%+125,896+69.1%AddedHistory
ABBVAbbVie Inc.Stock5,273$978.8K0.7%00.0%UnchangedHistory
MESOMesoblast LtdADR87,675$954.8K0.7%00.0%UnchangedHistory
USACUSA Compression Partners, LPCOMUNIT LTDPAR38,838$944.2K0.7%−638−1.6%ReducedHistory
OKEONEOK IncCOM11,510$939.6K0.7%−325−2.7%ReducedHistory
HESMHess Midstream LPCL A SHS23,030$886.9K0.7%00.0%UnchangedHistory
ASURAsure Software IncCOM89,660$875.1K0.7%−13,325−12.9%ReducedHistory
AAPLApple Inc.Stock4,054$831.8K0.6%00.0%UnchangedHistory
NVDANVIDIA CorpStock5,223$825.2K0.6%00.0%UnchangedHistory
COHUCohu IncCOM38,800$746.5K0.6%−11,500−22.9%ReducedHistory
EMREmerson Electric CoStock5,400$720.0K0.5%00.0%UnchangedHistory
NVGSNavigator Holdings Ltd.SHS50,400$713.2K0.5%−1,900−3.6%ReducedHistory
NUNu Holdings Ltd.ORD SHS CL A50,065$686.9K0.5%−1,125−2.2%ReducedHistory
MGNIMagnite, Inc.COM28,420$685.5K0.5%−9,750−25.5%ReducedHistory
NVSNovartis AGADR5,610$678.9K0.5%−150−2.6%ReducedHistory
SHELShell plcADR9,400$661.9K0.5%−500−5.1%ReducedHistory
NPKINPK International Inc.COM SHS68,585$583.7K0.4%−12,825−15.8%ReducedHistory
RRCRange Resources CorpCOM14,340$583.2K0.4%00.0%UnchangedHistory
PARPar Technology CorpCOM7,535$522.7K0.4%−1,445−16.1%ReducedHistory
POWIPower Integrations IncCOM9,200$514.3K0.4%00.0%UnchangedHistory
BLFSBiolife Solutions IncCOM NEW23,155$498.8K0.4%−7,270−23.9%ReducedHistory
PIMFranklin Master Intermediate Income TrustSH BEN INT147,613$494.5K0.4%−550−0.4%ReducedHistory
IBMInternational Business Machines CorpStock1,662$489.9K0.4%−863−34.2%ReducedHistory
BBSIBarrett Business Services IncCOM11,600$483.6K0.4%00.0%UnchangedHistory
WESWestern Midstream Partners, LPCOM UNIT LP INT11,600$448.9K0.3%00.0%UnchangedHistory
CURICuriosityStream Inc.COM CL A76,100$428.4K0.3%−84,250−52.5%ReducedHistory
REGNRegeneron Pharmaceuticals, Inc.COM797$418.4K0.3%−100−11.1%ReducedHistory
CVECenovus Energy Inc.COM28,800$391.7K0.3%00.0%UnchangedHistory
DMLPDorchester Minerals, L.P.COM UNIT14,025$390.7K0.3%−525−3.6%ReducedHistory
SGOLabrdn Gold ETF TrustETF11,715$369.5K0.3%−3,625−23.6%ReducedHistory
GBDCGolub Capital BDC, Inc.COM24,955$365.6K0.3%−8,925−26.3%ReducedHistory
EPDEnterprise Products Partners L.P.Stock11,427$354.4K0.3%−563−4.7%ReducedHistory
FISFidelity National Information Services, Inc.Stock4,324$352.0K0.3%00.0%UnchangedHistory
ORIOld Republic International CorpCOM8,480$326.0K0.2%00.0%UnchangedHistory
Invesco Exchange Traded FD T46137V357S&P500 EQL WGT1,770$321.7K0.2%−400−18.4%Reduced–
BLDRBuilders FirstSource, Inc.Stock2,741$319.8K0.2%00.0%UnchangedHistory
CYRXCryoport, Inc.COM PAR $0.00142,770$319.1K0.2%−9,400−18.0%ReducedHistory
KLICKulicke & Soffa Industries IncCOM8,600$297.6K0.2%−10,455−54.9%ReducedHistory
CVSCVS Health CorpStock4,275$294.9K0.2%−225−5.0%ReducedHistory
LINCLincoln Educational Services CorpCOM12,501$288.1K0.2%−4,495−26.4%ReducedHistory
ARCCAres Capital CorpCEF12,740$279.8K0.2%−750−5.6%ReducedHistory
WBSWebster Financial CorpCOM5,080$277.4K0.2%00.0%UnchangedHistory
FAFFirst American Financial CorpStock4,400$270.1K0.2%−250−5.4%ReducedHistory
HTGCHercules Capital, Inc.COM14,563$266.2K0.2%−10,419−41.7%ReducedHistory
State Street SPDR Portfolio S&P 500 ETF78464A854ETF3,500$254.4K0.2%+3,500New–
AFLAflac IncStock2,350$247.8K0.2%−500−17.5%ReducedHistory
J P Morgan Exchange Traded F46641Q332EQUITY PREMIUM4,325$245.9K0.2%−825−16.0%Reduced–
WLYJohn Wiley & Sons, Inc.CL A5,500$245.5K0.2%00.0%UnchangedHistory
INVEINVE Technologies, Inc.COM NEW73,594$239.9K0.2%−22,650−23.5%ReducedHistory
MPMP Materials Corp.COM CL A7,210$239.9K0.2%−12,555−63.5%ReducedHistory
UTGReaves Utility Income FundCOM SH BEN INT6,075$219.8K0.2%−3,650−37.5%ReducedHistory
BLZEBackblaze, Inc.COM CL A39,825$219.0K0.2%−7,450−15.8%ReducedHistory
JPCNuveen Preferred & Income Opportunities FundCOM25,710$206.2K0.2%00.0%UnchangedHistory
PBIPitney Bowes IncCOM17,050$186.0K0.1%−12,075−41.5%ReducedHistory
VKQInvesco Municipal TrustCOM20,000$183.0K0.1%00.0%UnchangedHistory
NUVNuveen Municipal Value Fund IncCOM20,000$173.8K0.1%00.0%UnchangedHistory
AQSTAquestive Therapeutics, Inc.COM43,585$144.3K0.1%+21,000+93.0%AddedHistory
XGNExagen Inc.COM19,910$139.0K0.1%−19,455−49.4%ReducedHistory
FFord Motor CoStock11,500$124.8K0.1%00.0%UnchangedHistory
KOPNKopin CorpCOM76,975$117.8K0.1%−16,350−17.5%ReducedHistory
OESXOrion Energy Systems, Inc.COM179,925$108.0K0.1%−157,672−46.7%ReducedHistory
ASPNAspen Aerogels IncCOM14,180$83.9K0.1%−3,975−21.9%ReducedHistory
MINAberdeen Intermediate Income FundSH BEN INT27,093$73.4K0.1%−8,800−24.5%ReducedHistory
UAMYUnited States Antimony CorpCOM20,350$44.4K<0.1%+20,350NewHistory
TUSKMammoth Energy Services, Inc.COM13,000$36.4K<0.1%−1,000−7.1%ReducedHistory
ONDSOndas Inc.COM NEW18,305$35.1K<0.1%+18,305NewHistory

Sold out since Q1 2025 (9)

Positions held at the end of Q1 2025 that are gone from this filing.

Positions of Penbrook Management LLC sold out since Q1 2025
SecurityClassShares in Q1 2025Value in Q1 2025% of portfolio in Q1 2025History
Veren Inc92340V107COM NEW441,125$2.92M2.2%–
COOPMaverick Merger Sub 2, LLCCOM15,825$1.89M1.4%History
iShares Tr464287556ISHARES BIOTECH3,240$414.4K0.3%–
TAT&T Inc.Stock14,455$408.8K0.3%History
PUBMPubMatic, Inc.COM CL A35,445$324.0K0.2%History
BDXBecton Dickinson & CoStock1,115$255.4K0.2%History
CVXChevron CorpStock1,490$249.3K0.2%History
iShares Tr46428743220 YR TR BD ETF2,595$236.2K0.2%–
COPConocoPhillipsStock2,025$212.7K0.2%History