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Livermore
Livermore
ZHEN

Penbrook Management LLC

SEC CIK
0001381055
Latest filing
Jul 23, 2026

Holdings in Q4 2023

Holdings as of Dec 31, 2023, filed Jan 16, 2024. Long positions only; changes compare share counts with Q3 2023.

Institution overview
Positions
102
+3 vs. Q3 2023
Portfolio value
$148.8M
+$12.4M (+9.1%) vs. Q3 2023
Filed
Jan 16, 2024
SEC
Holdings of Penbrook Management LLC in Q4 2023
SecurityClassSharesValue% of portfolioShare changeActionHistory
NVONovo Nordisk A SADR313,200$32.4M21.8%−4,000−1.3%ReducedHistory
MSFTMicrosoft CorpStock28,088$10.6M7.1%−830−2.9%ReducedHistory
AMZNAmazon Com IncStock50,580$7.69M5.2%00.0%UnchangedHistory
ACLSAxcelis Technologies IncStock43,040$5.58M3.8%−550−1.3%ReducedHistory
MCOMoodys CorpStock13,750$5.37M3.6%00.0%UnchangedHistory
PLABPhotronics IncCOM121,800$3.82M2.6%−300−0.2%ReducedHistory
TRIThomson Reuters CorpCOM NO PAR25,509$3.75M2.5%−327−1.3%ReducedHistory
GOOGAlphabet Inc.Stock25,720$3.62M2.4%00.0%UnchangedHistory
Crescent PT Energy Corp22576C101COM501,060$3.49M2.3%+1,900+0.4%Added–
GOOGLAlphabet Inc.Stock23,100$3.23M2.2%−100−0.4%ReducedHistory
VETVermilion Energy Inc.COM247,150$2.99M2.0%+500+0.2%AddedHistory
TRGPTarga Resources Corp.COM27,873$2.42M1.6%−386−1.4%ReducedHistory
COHUCohu IncCOM67,845$2.40M1.6%−2,240−3.2%ReducedHistory
BXBlackstone Inc.COM17,523$2.29M1.5%−1,400−7.4%ReducedHistory
BLDRBuilders FirstSource, Inc.Stock12,801$2.14M1.4%−524−3.9%ReducedHistory
FNFFidelity National Financial, Inc.COM SHS39,569$2.02M1.4%−50−0.1%ReducedHistory
NNYNuveen New York Municipal Value FundCOM213,727$1.77M1.2%00.0%UnchangedHistory
BPOPPopular, Inc.COM NEW20,215$1.66M1.1%−260−1.3%ReducedHistory
NVGSNavigator Holdings Ltd.SHS108,900$1.58M1.1%+13,850+14.6%AddedHistory
ALKTAlkami Technology, Inc.Stock61,950$1.50M1.0%+1,400+2.3%AddedHistory
ADPAutomatic Data Processing IncStock6,300$1.47M1.0%00.0%UnchangedHistory
USACUSA Compression Partners, LPCOMUNIT LTDPAR60,776$1.39M0.9%−1,000−1.6%ReducedHistory
SONYSony Group CorpSPONSORED ADR14,000$1.33M0.9%00.0%UnchangedHistory
BRK.BBerkshire Hathaway IncStock3,705$1.32M0.9%−282−7.1%ReducedHistory
FBPFirst BancorpCOM NEW79,500$1.31M0.9%00.0%UnchangedHistory
ETEnergy Transfer LPCOM UT LTD PTN94,611$1.31M0.9%+72,493+327.8%AddedHistory
KLICKulicke & Soffa Industries IncCOM22,585$1.24M0.8%−665−2.9%ReducedHistory
SPYSPDR S&P 500 ETF TrustETF2,415$1.15M0.8%00.0%UnchangedHistory
VZVerizon Communications IncStock29,471$1.11M0.7%+755+2.6%AddedHistory
PLPlanet Labs PBCCOM CL A441,425$1.09M0.7%−1,000−0.2%ReducedHistory
OKEONEOK IncCOM15,035$1.06M0.7%+200+1.3%AddedHistory
SASeabridge Gold IncCOM84,930$1.03M0.7%−300−0.4%ReducedHistory
REGNRegeneron Pharmaceuticals, Inc.COM1,147$1.01M0.7%+100+9.6%AddedHistory
DAIOData I/O CorpCOM342,350$1.01M0.7%−1,900−0.6%ReducedHistory
CSCOCisco Systems, Inc.Stock19,400$980.1K0.7%−500−2.5%ReducedHistory
SYFSynchrony FinancialCOM25,150$960.5K0.6%00.0%UnchangedHistory
AAPLApple Inc.Stock4,770$918.4K0.6%−266−5.3%ReducedHistory
INVEINVE Technologies, Inc.COM NEW107,299$884.1K0.6%−825−0.8%ReducedHistory
WMBWilliams Companies, Inc.COM24,330$847.4K0.6%−350−1.4%ReducedHistory
ABBVAbbVie Inc.Stock5,431$841.6K0.6%00.0%UnchangedHistory
HESMHess Midstream LPCL A SHS25,830$817.0K0.5%−5,000−16.2%ReducedHistory
PUBMPubMatic, Inc.COM CL A46,810$763.5K0.5%−200−0.4%ReducedHistory
POWIPower Integrations IncCOM9,200$755.4K0.5%−800−8.0%ReducedHistory
IVACIntevac IncCOM171,885$742.5K0.5%−1,490−0.9%ReducedHistory
SKYChampion Homes, Inc.Stock9,700$720.3K0.5%+121+1.3%AddedHistory
IBMInternational Business Machines CorpStock4,390$718.0K0.5%+140+3.3%AddedHistory
CVSCVS Health CorpStock8,700$687.0K0.5%+50+0.6%AddedHistory
BLFSBiolife Solutions IncCOM NEW40,950$665.4K0.4%−550−1.3%ReducedHistory
Invesco QQQ Trust Series I46090E103ETF1,605$657.3K0.4%−100−5.9%Reduced–
KOPNKopin CorpCOM322,575$654.8K0.4%−2,500−0.8%ReducedHistory
SHELShell plcADR9,900$651.4K0.4%−200−2.0%ReducedHistory
METAMeta Platforms, Inc.Stock1,800$637.1K0.4%00.0%UnchangedHistory
BBSIBarrett Business Services IncCOM5,300$613.7K0.4%00.0%UnchangedHistory
Invesco Exchange Traded FD T46137V365S&P500 EQL ENR8,240$607.5K0.4%−2,025−19.7%Reduced–
ASURAsure Software IncCOM63,510$604.6K0.4%+63,510NewHistory
RRCRange Resources CorpCOM19,200$584.4K0.4%00.0%UnchangedHistory
EMREmerson Electric CoStock6,000$584.0K0.4%+200+3.4%AddedHistory
NVSNovartis AGADR5,760$581.6K0.4%+300+5.5%AddedHistory
NPKINPK International Inc.COM SHS86,835$576.6K0.4%+86,835NewHistory
FISVFiserv IncStock4,330$575.2K0.4%00.0%UnchangedHistory
LINCLincoln Educational Services CorpCOM57,105$573.3K0.4%−700−1.2%ReducedHistory
VMDViemed Healthcare, Inc.COM69,787$547.8K0.4%−450−0.6%ReducedHistory
CYRXCryoport, Inc.COM PAR $0.00134,780$538.7K0.4%−150−0.4%ReducedHistory
iShares Tr464287556ISHARES BIOTECH3,960$538.0K0.4%00.0%Unchanged–
FAFFirst American Financial CorpStock7,550$486.5K0.3%−300−3.8%ReducedHistory
CVECenovus Energy Inc.COM28,800$479.5K0.3%00.0%UnchangedHistory
DMLPDorchester Minerals, L.P.COM UNIT15,050$479.0K0.3%+1,050+7.5%AddedHistory
PIMFranklin Master Intermediate Income TrustSH BEN INT149,963$478.4K0.3%−17,000−10.2%ReducedHistory
BDXBecton Dickinson & CoStock1,839$448.4K0.3%−5−0.3%ReducedHistory
CHGGChegg, IncCOM39,300$446.4K0.3%−490−1.2%ReducedHistory
ABNBAirbnb, Inc.Stock3,200$435.6K0.3%−300−8.6%ReducedHistory
MPMP Materials Corp.COM CL A21,725$431.2K0.3%00.0%UnchangedHistory
HTGCHercules Capital, Inc.COM23,904$398.5K0.3%+4,706+24.5%AddedHistory
MRKMerck & Co., Inc.Stock3,606$393.1K0.3%00.0%UnchangedHistory
QDELQuidelOrtho CorpCOM5,240$386.2K0.3%00.0%UnchangedHistory
OESXOrion Energy Systems, Inc.COM411,447$356.6K0.2%−3,300−0.8%ReducedHistory
COPConocoPhillipsStock2,985$346.5K0.2%00.0%UnchangedHistory
TUSKMammoth Energy Services, Inc.COM76,900$343.0K0.2%−4,000−4.9%ReducedHistory
Invesco Exchange Traded FD T46137V357S&P500 EQL WGT2,170$342.4K0.2%00.0%Unchanged–
AFLAflac IncStock4,100$338.3K0.2%00.0%UnchangedHistory
MESOMesoblast LtdADR275,350$302.9K0.2%+275,350NewHistory
IMMRImmersion CorpCOM42,530$300.3K0.2%−8,050−15.9%ReducedHistory
UTGReaves Utility Income FundCOM SH BEN INT10,575$282.8K0.2%00.0%UnchangedHistory
J P Morgan Exchange Traded F46641Q332EQUITY PREMIUM4,950$272.2K0.2%+4,950New–
TAT&T Inc.Stock15,555$261.0K0.2%−275−1.7%ReducedHistory
CVXChevron CorpStock1,665$248.4K0.2%+65+4.1%AddedHistory
WBSWebster Financial CorpCOM4,680$237.6K0.2%+4,680NewHistory
FISFidelity National Information Services, Inc.Stock3,924$235.7K0.2%00.0%UnchangedHistory
JPCNuveen Preferred & Income Opportunities FundCOM33,621$227.3K0.2%+33,621NewHistory
AEHRAehr Test SystemsCOM8,080$214.4K0.1%+8,080NewHistory
CATCaterpillar IncStock700$207.0K0.1%+700NewHistory
VKQInvesco Municipal TrustCOM20,000$190.6K0.1%00.0%UnchangedHistory
MINAberdeen Intermediate Income FundSH BEN INT65,429$175.3K0.1%−700−1.1%ReducedHistory
NUVNuveen Municipal Value Fund IncCOM20,000$172.0K0.1%00.0%UnchangedHistory
INDIindie Semiconductor, Inc.CLASS A COM19,000$154.1K0.1%+19,000NewHistory
XGNExagen Inc.COM75,710$150.7K0.1%+2,300+3.1%AddedHistory
FFord Motor CoStock12,200$148.7K0.1%−500−3.9%ReducedHistory
TBIOTelesis Bio Inc.COM354,325$141.4K0.1%−9,245−2.5%ReducedHistory
EGIOEdgio, Inc.COM408,120$139.8K0.1%−58,250−12.5%ReducedHistory
IDNIntellicheck, Inc.COM NEW68,400$130.0K0.1%−4,000−5.5%ReducedHistory

Options (1)

Puts and calls in the same filing. Amounts are the market value of the underlying shares, which is what 13F reports.

Option positions of Penbrook Management LLC in Q4 2023
SecurityClassPutsCalls
Photronics Inc719405952PUT$314–

Sold out since Q3 2023 (6)

Positions held at the end of Q3 2023 that are gone from this filing.

Positions of Penbrook Management LLC sold out since Q3 2023
SecurityClassShares in Q3 2023Value in Q3 2023% of portfolio in Q3 2023History
CEQPCrestwood Equity Partners LPUNIT LTD PARTNER34,500$1.01M0.7%History
MESOMesoblast LtdSPONS ADR285,350$351.0K0.3%History
WLYJohn Wiley & Sons, Inc.CL A5,800$215.6K0.2%History
Nuveen PFD & Incm Securties67072C105COM34,000$209.8K0.2%–
STKLSunOpta Inc.COM60,065$202.4K0.1%History
NVVENuvve Holding Corp.COM64,835$22.0K<0.1%History