Skip to main content
Livermore
Livermore
ZHEN

Penbrook Management LLC

SEC CIK
0001381055
Latest filing
Jul 23, 2026

Holdings in Q4 2025

Holdings as of Dec 31, 2025, filed Jan 6, 2026. Long positions only; changes compare share counts with Q3 2025.

Institution overview
Positions
97
−7 vs. Q3 2025
Portfolio value
$145.0M
+$1.75M (+1.2%) vs. Q3 2025
Filed
Jan 6, 2026
SEC
Holdings of Penbrook Management LLC in Q4 2025
SecurityClassSharesValue% of portfolioShare changeActionHistory
NVONovo Nordisk A SADR316,400$16.1M11.1%+4,800+1.5%AddedHistory
AMZNAmazon Com IncStock51,760$11.9M8.2%+200.0%AddedHistory
MSFTMicrosoft CorpStock22,750$11.0M7.6%−1,555−6.4%ReducedHistory
GOOGLAlphabet Inc.Stock23,170$7.25M5.0%00.0%UnchangedHistory
GOOGAlphabet Inc.Stock22,554$7.08M4.9%−166−0.7%ReducedHistory
MCOMoodys CorpStock13,600$6.95M4.8%−50−0.4%ReducedHistory
PLPlanet Labs PBCCOM CL A295,245$5.82M4.0%−18,975−6.0%ReducedHistory
PLABPhotronics IncCOM110,680$3.54M2.4%−700−0.6%ReducedHistory
TRIThomson Reuters CorpCOM NO PAR24,948$3.30M2.3%+100+0.4%AddedHistory
ALKTAlkami Technology, Inc.Stock127,685$2.95M2.0%+3,545+2.9%AddedHistory
SASeabridge Gold IncCOM95,990$2.84M2.0%−555−0.6%ReducedHistory
ELVAElectrovaya Inc.COM NEW349,861$2.76M1.9%+41,950+13.6%AddedHistory
AEHRAehr Test SystemsCOM114,900$2.32M1.6%−1,350−1.2%ReducedHistory
BXBlackstone Inc.COM14,800$2.28M1.6%00.0%UnchangedHistory
VMDViemed Healthcare, Inc.COM271,548$2.02M1.4%−780−0.3%ReducedHistory
NNYNuveen New York Municipal Value FundCOM213,727$1.83M1.3%00.0%UnchangedHistory
SONYSony Group CorpSPONSORED ADR68,500$1.75M1.2%00.0%UnchangedHistory
BRK.BBerkshire Hathaway IncStock3,350$1.68M1.2%−25−0.7%ReducedHistory
VETVermilion Energy Inc.COM197,825$1.65M1.1%+18,250+10.2%AddedHistory
ADPAutomatic Data Processing IncStock6,300$1.62M1.1%00.0%UnchangedHistory
MESOMesoblast LtdADR87,575$1.58M1.1%−100−0.1%ReducedHistory
BPOPPopular, Inc.COM NEW11,850$1.48M1.0%−650−5.2%ReducedHistory
CSCOCisco Systems, Inc.Stock18,350$1.41M1.0%00.0%UnchangedHistory
CURICuriosityStream Inc.COM CL A347,300$1.32M0.9%−1,400−0.4%ReducedHistory
TRGPTarga Resources Corp.COM7,028$1.30M0.9%−1,883−21.1%ReducedHistory
SYFSynchrony FinancialCOM15,500$1.29M0.9%−2,700−14.8%ReducedHistory
ACLSAxcelis Technologies IncStock15,895$1.28M0.9%−1,000−5.9%ReducedHistory
VZVerizon Communications IncStock31,135$1.27M0.9%−2,100−6.3%ReducedHistory
ETEnergy Transfer LPCOM UT LTD PTN74,489$1.23M0.8%−7,105−8.7%ReducedHistory
ABNBAirbnb, Inc.Stock8,950$1.21M0.8%+100+1.1%AddedHistory
ABBVAbbVie Inc.Stock5,230$1.20M0.8%−43−0.8%ReducedHistory
DVDoubleVerify Holdings, Inc.COM102,910$1.18M0.8%+102,910NewHistory
SPYSPDR S&P 500 ETF TrustETF1,720$1.17M0.8%−75−4.2%ReducedHistory
WMBWilliams Companies, Inc.COM19,130$1.15M0.8%−150−0.8%ReducedHistory
Invesco QQQ Trust Series I46090E103ETF1,870$1.15M0.8%−75−3.9%Reduced–
DAIOData I/O CorpCOM356,850$1.13M0.8%+4,100+1.2%AddedHistory
METAMeta Platforms, Inc.Stock1,700$1.12M0.8%00.0%UnchangedHistory
FNFFidelity National Financial, Inc.COM SHS20,321$1.11M0.8%−3,500−14.7%ReducedHistory
HESMHess Midstream LPCL A SHS30,055$1.04M0.7%+7,025+30.5%AddedHistory
NVDANVIDIA CorpStock5,223$974.1K0.7%00.0%UnchangedHistory
USACUSA Compression Partners, LPCOMUNIT LTDPAR41,038$943.9K0.7%+2,200+5.7%AddedHistory
FBPFirst BancorpCOM NEW44,900$930.8K0.6%−7,700−14.6%ReducedHistory
COHUCohu IncCOM38,300$891.2K0.6%−11,200−22.6%ReducedHistory
ASURAsure Software IncCOM89,235$840.6K0.6%−1,425−1.6%ReducedHistory
OKEONEOK IncCOM11,310$831.3K0.6%−100−0.9%ReducedHistory
MRVLMarvell Technology, Inc.COM9,730$826.9K0.6%−10−0.1%ReducedHistory
NPKINPK International Inc.COM SHS67,250$801.6K0.6%−1,335−1.9%ReducedHistory
NVSNovartis AGADR5,610$773.5K0.5%00.0%UnchangedHistory
PARPar Technology CorpCOM19,815$718.9K0.5%+7,060+55.4%AddedHistory
SGOLabrdn Gold ETF TrustETF17,155$704.7K0.5%−790−4.4%ReducedHistory
EMREmerson Electric CoStock5,300$703.4K0.5%−100−1.9%ReducedHistory
SHELShell plcADR9,400$690.7K0.5%00.0%UnchangedHistory
WESWestern Midstream Partners, LPCOM UNIT LP INT15,900$628.0K0.4%+1,300+8.9%AddedHistory
REGNRegeneron Pharmaceuticals, Inc.COM797$615.2K0.4%00.0%UnchangedHistory
BLFSBiolife Solutions IncCOM NEW22,955$555.1K0.4%−200−0.9%ReducedHistory
CYRXCryoport, Inc.COM PAR $0.00152,835$507.2K0.3%+65+0.1%AddedHistory
CVECenovus Energy Inc.COM29,880$505.6K0.3%00.0%UnchangedHistory
MGNIMagnite, Inc.COM31,115$505.0K0.3%+2,695+9.5%AddedHistory
RRCRange Resources CorpCOM14,240$502.1K0.3%−100−0.7%ReducedHistory
PIMFranklin Master Intermediate Income TrustSH BEN INT147,063$491.2K0.3%00.0%UnchangedHistory
IBMInternational Business Machines CorpStock1,627$481.9K0.3%−25−1.5%ReducedHistory
AAPLApple Inc.Stock1,529$415.7K0.3%−200−11.6%ReducedHistory
TTITetra Technologies IncCOM43,975$412.0K0.3%−625−1.4%ReducedHistory
LINCLincoln Educational Services CorpCOM17,026$411.2K0.3%+4,525+36.2%AddedHistory
GPNGlobal Payments IncStock5,115$395.9K0.3%00.0%UnchangedHistory
EPDEnterprise Products Partners L.P.Stock11,427$366.4K0.3%00.0%UnchangedHistory
DMLPDorchester Minerals, L.P.COM UNIT16,225$362.8K0.3%+2,200+15.7%AddedHistory
BMYBristol Myers Squibb CoStock6,250$337.1K0.2%+6,250NewHistory
OSSOne Stop Systems, Inc.COM46,740$335.6K0.2%−673−1.4%ReducedHistory
BLZEBackblaze, Inc.COM CL A71,350$332.5K0.2%+19,325+37.1%AddedHistory
POWIPower Integrations IncCOM9,200$327.0K0.2%00.0%UnchangedHistory
KLICKulicke & Soffa Industries IncCOM7,100$323.5K0.2%−1,500−17.4%ReducedHistory
GBDCGolub Capital BDC, Inc.COM23,680$321.3K0.2%−1,275−5.1%ReducedHistory
Invesco Exchange Traded FD T46137V357S&P500 EQL WGT1,670$319.9K0.2%00.0%Unchanged–
BBSIBarrett Business Services IncCOM8,800$318.6K0.2%−2,500−22.1%ReducedHistory
HTGCHercules Capital, Inc.COM14,767$277.9K0.2%−8−0.1%ReducedHistory
AQSTAquestive Therapeutics, Inc.COM42,160$272.4K0.2%−1,425−3.3%ReducedHistory
KOPNKopin CorpCOM114,975$269.0K0.2%−22,000−16.1%ReducedHistory
FAFFirst American Financial CorpStock4,300$264.2K0.2%−100−2.3%ReducedHistory
WBSWebster Financial CorpCOM4,180$263.1K0.2%00.0%UnchangedHistory
State Street SPDR Portfolio S&P 500 ETF78464A854ETF3,200$256.7K0.2%−300−8.6%Reduced–
NKENIKE, Inc.Stock3,885$247.5K0.2%−50−1.3%ReducedHistory
J P Morgan Exchange Traded F46641Q332EQUITY PREMIUM4,225$241.8K0.2%−100−2.3%Reduced–
UTGReaves Utility Income FundCOM SH BEN INT6,025$220.4K0.2%−50−0.8%ReducedHistory
AFLAflac IncStock1,950$215.0K0.1%00.0%UnchangedHistory
FISFidelity National Information Services, Inc.Stock3,224$214.3K0.1%−900−21.8%ReducedHistory
JPMJPMorgan Chase & CoStock660$212.7K0.1%00.0%UnchangedHistory
CVXChevron CorpStock1,377$209.9K0.1%00.0%UnchangedHistory
TFPMTriple Flag Precious Metals Corp.Stock6,089$202.3K0.1%+6,089NewHistory
VKQInvesco Municipal TrustCOM20,000$193.0K0.1%00.0%UnchangedHistory
NUVNuveen Municipal Value Fund IncCOM20,000$181.2K0.1%00.0%UnchangedHistory
PAYSPaysign, Inc.COM30,825$158.7K0.1%+30,825NewHistory
ONDSOndas Inc.COM NEW10,005$97.6K0.1%−3,850−27.8%ReducedHistory
IOVAIovance Biotherapeutics, Inc.COM33,945$92.7K0.1%+33,945NewHistory
XGNExagen Inc.COM13,430$81.7K0.1%−6,480−32.5%ReducedHistory
BTQBTQ Technologies Corp.COM10,570$54.1K<0.1%−4,180−28.3%ReducedHistory
MINAberdeen Intermediate Income FundSH BEN INT18,750$48.9K<0.1%−6,943−27.0%ReducedHistory

Sold out since Q3 2025 (12)

Positions held at the end of Q3 2025 that are gone from this filing.

Positions of Penbrook Management LLC sold out since Q3 2025
SecurityClassShares in Q3 2025Value in Q3 2025% of portfolio in Q3 2025History
BLDRBuilders FirstSource, Inc.Stock2,741$332.3K0.2%History
IRENIREN LtdORDINARY SHARES6,200$291.0K0.2%History
INVEINVE Technologies, Inc.COM NEW73,594$253.9K0.2%History
JPCNuveen Preferred & Income Opportunities FundCOM25,710$210.8K0.1%History
WLYJohn Wiley & Sons, Inc.CL A5,000$202.3K0.1%History
PBIPitney Bowes IncCOM17,050$194.5K0.1%History
OESXOrion Energy Systems, Inc.COM NEW16,644$145.8K0.1%History
ASPNAspen Aerogels IncCOM14,180$98.7K0.1%History
UAMYUnited States Antimony CorpCOM14,825$91.9K0.1%History
DEFTDefi Technologies, Inc.COM10,800$22.8K<0.1%History
CISOCISO Global, Inc.COM NEW14,270$15.0K<0.1%History
OPTTOcean Power Technologies, Inc.COM NEW15,000$7.55K<0.1%History