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Livermore
Livermore
ZHEN

Penbrook Management LLC

SEC CIK
0001381055
Latest filing
Jul 23, 2026

Holdings in Q1 2023

Holdings as of Mar 31, 2023, filed Apr 20, 2023. Long positions only; changes compare share counts with Q4 2022.

Institution overview
Positions
95
0 vs. Q4 2022
Portfolio value
$127.4M
+$10.0M (+8.6%) vs. Q4 2022
Filed
Apr 20, 2023
SEC
Holdings of Penbrook Management LLC in Q1 2023
SecurityClassSharesValue% of portfolioShare changeActionHistory
NVONovo Nordisk A SADR159,200$25.3M19.9%−900−0.6%ReducedHistory
MSFTMicrosoft CorpStock29,408$8.48M6.7%−100−0.3%ReducedHistory
ACLSAxcelis Technologies IncStock47,310$6.30M4.9%−365−0.8%ReducedHistory
AMZNAmazon Com IncStock50,580$5.22M4.1%00.0%UnchangedHistory
MCOMoodys CorpStock13,750$4.21M3.3%00.0%UnchangedHistory
TRIThomson Reuters CorpCOM NEW27,011$3.51M2.8%−272−1.0%ReducedHistory
Crescent PT Energy Corp22576C101COM493,785$3.48M2.7%−5,400−1.1%Reduced–
GOOGAlphabet Inc.Stock25,920$2.70M2.1%−400−1.5%ReducedHistory
COHUCohu IncCOM69,985$2.69M2.1%−1,900−2.6%ReducedHistory
GOOGLAlphabet Inc.Stock23,700$2.46M1.9%00.0%UnchangedHistory
VETVermilion Energy Inc.COM180,750$2.34M1.8%−2,000−1.1%ReducedHistory
USACUSA Compression Partners, LPCOMUNIT LTDPAR102,125$2.16M1.7%−200−0.2%ReducedHistory
TRGPTarga Resources Corp.COM29,567$2.16M1.7%−700−2.3%ReducedHistory
PLABPhotronics IncCOM124,400$2.06M1.6%−500−0.4%ReducedHistory
NNYNuveen New York Municipal Value FundCOM213,727$1.86M1.5%00.0%UnchangedHistory
DAIOData I/O CorpCOM347,250$1.73M1.4%−2,500−0.7%ReducedHistory
BXBlackstone Inc.COM19,423$1.71M1.3%−200−1.0%ReducedHistory
AZTAAzenta, Inc.COM31,865$1.42M1.1%−880−2.7%ReducedHistory
ADPAutomatic Data Processing IncStock6,338$1.41M1.1%00.0%UnchangedHistory
FNFFidelity National Financial, Inc.COM SHS39,719$1.39M1.1%−2,400−5.7%ReducedHistory
NVGSNavigator Holdings Ltd.SHS98,150$1.37M1.1%−2,500−2.5%ReducedHistory
SONYSony Group CorpSPONSORED ADR14,000$1.27M1.0%−1,068−7.1%ReducedHistory
BRK.BBerkshire Hathaway IncStock3,987$1.23M1.0%00.0%UnchangedHistory
IVACIntevac IncCOM167,100$1.22M1.0%−10,600−6.0%ReducedHistory
BLDRBuilders FirstSource, Inc.Stock13,718$1.22M1.0%−131−0.9%ReducedHistory
KLICKulicke & Soffa Industries IncCOM22,900$1.21M0.9%−1,590−6.5%ReducedHistory
BPOPPopular, Inc.COM NEW20,925$1.20M0.9%−400−1.9%ReducedHistory
CSCOCisco Systems, Inc.Stock21,900$1.14M0.9%00.0%UnchangedHistory
SASeabridge Gold IncCOM87,180$1.13M0.9%−2,250−2.5%ReducedHistory
TBIOTelesis Bio Inc.COM342,470$1.06M0.8%+73,620+27.4%AddedHistory
VZVerizon Communications IncStock27,091$1.05M0.8%00.0%UnchangedHistory
SPYSPDR S&P 500 ETF TrustETF2,450$1.00M0.8%00.0%UnchangedHistory
AAPLApple Inc.Stock5,761$950.0K0.7%−206−3.5%ReducedHistory
OKEONEOK IncCOM14,835$942.6K0.7%00.0%UnchangedHistory
HESMHess Midstream LPCL A SHS32,430$938.5K0.7%00.0%UnchangedHistory
CVSCVS Health CorpStock12,341$917.1K0.7%00.0%UnchangedHistory
FBPFirst BancorpCOM NEW80,000$913.6K0.7%−400−0.5%ReducedHistory
ABBVAbbVie Inc.Stock5,731$913.3K0.7%00.0%UnchangedHistory
BLFSBiolife Solutions IncCOM NEW41,500$902.6K0.7%+920+2.3%AddedHistory
REGNRegeneron Pharmaceuticals, Inc.COM1,072$880.8K0.7%00.0%UnchangedHistory
CEQPCrestwood Equity Partners LPUNIT LTD PARTNER34,700$865.1K0.7%−200−0.6%ReducedHistory
POWIPower Integrations IncCOM10,000$846.4K0.7%00.0%UnchangedHistory
OESXOrion Energy Systems, Inc.COM414,747$841.9K0.7%−21,700−5.0%ReducedHistory
MESOMesoblast LtdSPONS ADR255,650$841.1K0.7%00.0%UnchangedHistory
CYRXCryoport, Inc.COM PAR $0.00134,930$838.3K0.7%+2,515+7.8%AddedHistory
SYFSynchrony FinancialCOM27,150$789.5K0.6%00.0%UnchangedHistory
WMBWilliams Companies, Inc.COM25,980$775.8K0.6%00.0%UnchangedHistory
Invesco QQQ Trust Series I46090E103ETF2,330$747.8K0.6%00.0%Unchanged–
Invesco Exchange Traded FD T46137V365S&P500 EQL ENR10,615$725.3K0.6%−950−8.2%Reduced–
INVEINVE Technologies, Inc.COM NEW107,874$662.3K0.5%+25,497+31.0%AddedHistory
PUBMPubMatic, Inc.COM CL A47,010$649.7K0.5%−1,500−3.1%ReducedHistory
SHELShell plcADR10,100$581.2K0.5%00.0%UnchangedHistory
FAFFirst American Financial CorpStock10,350$576.1K0.5%00.0%UnchangedHistory
IBMInternational Business Machines CorpStock4,200$550.6K0.4%00.0%UnchangedHistory
PIMFranklin Master Intermediate Income TrustSH BEN INT166,963$530.9K0.4%00.0%UnchangedHistory
RRCRange Resources CorpCOM19,700$521.5K0.4%00.0%UnchangedHistory
iShares Tr464287556ISHARES BIOTECH3,990$515.3K0.4%00.0%Unchanged–
EMREmerson Electric CoStock5,800$505.4K0.4%00.0%UnchangedHistory
CVECenovus Energy Inc.COM28,800$502.8K0.4%00.0%UnchangedHistory
NVSNovartis AGADR5,460$502.3K0.4%00.0%UnchangedHistory
FISVFiserv IncStock4,430$500.7K0.4%−70−1.6%ReducedHistory
VMDViemed Healthcare, Inc.COM50,850$491.1K0.4%+50,850NewHistory
BBSIBarrett Business Services IncCOM5,500$487.5K0.4%00.0%UnchangedHistory
BDXBecton Dickinson & CoStock1,884$466.4K0.4%−9−0.5%ReducedHistory
CHGGChegg, IncCOM27,765$452.6K0.4%−1,550−5.3%ReducedHistory
IMMRImmersion CorpCOM50,580$452.2K0.4%−47,200−48.3%ReducedHistory
MRKMerck & Co., Inc.Stock4,206$447.5K0.4%00.0%UnchangedHistory
ABNBAirbnb, Inc.Stock3,500$435.4K0.3%00.0%UnchangedHistory
DMLPDorchester Minerals, L.P.COM UNIT14,000$424.1K0.3%00.0%UnchangedHistory
METAMeta Platforms, Inc.Stock1,800$381.5K0.3%−100−5.3%ReducedHistory
BNEDBarnes & Noble Education, Inc.COM228,705$347.6K0.3%−14,000−5.8%ReducedHistory
TUSKMammoth Energy Services, Inc.COM81,300$343.1K0.3%+81,300NewHistory
FFord Motor CoStock27,175$342.4K0.3%00.0%UnchangedHistory
KOPNKopin CorpCOM300,400$327.4K0.3%−16,800−5.3%ReducedHistory
LINCLincoln Educational Services CorpCOM57,805$327.2K0.3%−4,500−7.2%ReducedHistory
COPConocoPhillipsStock3,120$309.5K0.2%00.0%UnchangedHistory
EGIOEdgio, Inc.COM386,370$305.7K0.2%−29,500−7.1%ReducedHistory
CVXChevron CorpStock1,700$277.4K0.2%00.0%UnchangedHistory
ETEnergy Transfer LPCOM UT LTD PTN22,118$275.8K0.2%00.0%UnchangedHistory
AFLAflac IncStock4,100$264.5K0.2%00.0%UnchangedHistory
HTGCHercules Capital, Inc.COM18,037$232.5K0.2%+18,037NewHistory
WLYJohn Wiley & Sons, Inc.CL A5,900$228.7K0.2%−100−1.7%ReducedHistory
VKQInvesco Municipal TrustCOM20,000$198.4K0.2%00.0%UnchangedHistory
ARCCAres Capital CorpCEF10,540$192.6K0.2%00.0%UnchangedHistory
MINAberdeen Intermediate Income FundSH BEN INT66,929$185.4K0.1%−1,500−2.2%ReducedHistory
IDNIntellicheck, Inc.COM NEW72,400$181.0K0.1%−200−0.3%ReducedHistory
Nuveen PFD & Incm Securties67072C105COM28,000$180.9K0.1%00.0%Unchanged–
XGNExagen Inc.COM74,010$179.8K0.1%00.0%UnchangedHistory
NUVNuveen Municipal Value Fund IncCOM20,000$176.2K0.1%00.0%UnchangedHistory
DBIDesigner Brands Inc.CL A19,345$169.1K0.1%−825−4.1%ReducedHistory
AMAntero Midstream CorpStock10,000$104.9K0.1%00.0%UnchangedHistory
NVVENuvve Holding Corp.COM128,635$90.0K0.1%−7,200−5.3%ReducedHistory
IMDXInsight Molecular Diagnostics Inc.COM207,675$73.6K0.1%00.0%UnchangedHistory
DMDesktop Metal, Inc.COM CL A22,600$52.0K<0.1%00.0%UnchangedHistory
Invesco Exchange Traded FD T46137V357S&P500 EQL WGT2,170––00.0%Unchanged–

Sold out since Q4 2022 (3)

Positions held at the end of Q4 2022 that are gone from this filing.

Positions of Penbrook Management LLC sold out since Q4 2022
SecurityClassShares in Q4 2022Value in Q4 2022% of portfolio in Q4 2022History
Atlas Technical Consultants, Inc.049430101COM CLS A121,920$627.9K0.5%–
EAFGraftech International LtdCOM110,900$527.9K0.4%History
Maverix Metals Inc57776F405COM NEW45,000$209.9K0.2%–