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Livermore
Livermore
ZHEN

Penbrook Management LLC

SEC CIK
0001381055
Latest filing
Jul 23, 2026

Holdings in Q2 2023

Holdings as of Jun 30, 2023, filed Jul 17, 2023. Long positions only; changes compare share counts with Q1 2023.

Institution overview
Positions
98
+3 vs. Q1 2023
Portfolio value
$138.0M
+$10.6M (+8.3%) vs. Q1 2023
Filed
Jul 17, 2023
SEC
Holdings of Penbrook Management LLC in Q2 2023
SecurityClassSharesValue% of portfolioShare changeActionHistory
NVONovo Nordisk A SADR158,600$25.7M18.6%−600−0.4%ReducedHistory
MSFTMicrosoft CorpStock29,073$9.90M7.2%−335−1.1%ReducedHistory
ACLSAxcelis Technologies IncStock44,625$8.18M5.9%−2,685−5.7%ReducedHistory
AMZNAmazon Com IncStock50,580$6.59M4.8%00.0%UnchangedHistory
MCOMoodys CorpStock13,750$4.78M3.5%00.0%UnchangedHistory
TRIThomson Reuters CorpCOM NO PAR25,836$3.49M2.5%+25,836NewHistory
Crescent PT Energy Corp22576C101COM493,785$3.33M2.4%00.0%Unchanged–
PLABPhotronics IncCOM122,400$3.16M2.3%−2,000−1.6%ReducedHistory
GOOGAlphabet Inc.Stock25,920$3.14M2.3%00.0%UnchangedHistory
VETVermilion Energy Inc.COM245,950$3.07M2.2%+65,200+36.1%AddedHistory
COHUCohu IncCOM69,985$2.91M2.1%00.0%UnchangedHistory
GOOGLAlphabet Inc.Stock23,700$2.84M2.1%00.0%UnchangedHistory
TRGPTarga Resources Corp.COM28,467$2.17M1.6%−1,100−3.7%ReducedHistory
USACUSA Compression Partners, LPCOMUNIT LTDPAR102,125$2.02M1.5%00.0%UnchangedHistory
BLDRBuilders FirstSource, Inc.Stock13,325$1.81M1.3%−393−2.9%ReducedHistory
NNYNuveen New York Municipal Value FundCOM213,727$1.81M1.3%00.0%UnchangedHistory
BXBlackstone Inc.COM19,423$1.81M1.3%00.0%UnchangedHistory
DAIOData I/O CorpCOM347,250$1.49M1.1%00.0%UnchangedHistory
FNFFidelity National Financial, Inc.COM SHS39,619$1.43M1.0%−100−0.3%ReducedHistory
ADPAutomatic Data Processing IncStock6,300$1.38M1.0%−38−0.6%ReducedHistory
KLICKulicke & Soffa Industries IncCOM22,900$1.36M1.0%00.0%UnchangedHistory
BRK.BBerkshire Hathaway IncStock3,987$1.36M1.0%00.0%UnchangedHistory
NVGSNavigator Holdings Ltd.SHS98,150$1.28M0.9%00.0%UnchangedHistory
PLPlanet Labs PBCCOM CL A396,075$1.28M0.9%+396,075NewHistory
SONYSony Group CorpSPONSORED ADR14,000$1.26M0.9%00.0%UnchangedHistory
BPOPPopular, Inc.COM NEW20,825$1.26M0.9%−100−0.5%ReducedHistory
CSCOCisco Systems, Inc.Stock21,900$1.13M0.8%00.0%UnchangedHistory
SPYSPDR S&P 500 ETF TrustETF2,415$1.07M0.8%−35−1.4%ReducedHistory
SASeabridge Gold IncCOM86,780$1.05M0.8%−400−0.5%ReducedHistory
AAPLApple Inc.Stock5,336$1.04M0.8%−425−7.4%ReducedHistory
VZVerizon Communications IncStock27,716$1.03M0.7%+625+2.3%AddedHistory
MESOMesoblast LtdSPONS ADR255,650$999.6K0.7%00.0%UnchangedHistory
HESMHess Midstream LPCL A SHS32,430$995.0K0.7%00.0%UnchangedHistory
FBPFirst BancorpCOM NEW79,800$975.2K0.7%−200−0.3%ReducedHistory
POWIPower Integrations IncCOM10,000$946.7K0.7%00.0%UnchangedHistory
CEQPCrestwood Equity Partners LPUNIT LTD PARTNER34,700$918.9K0.7%00.0%UnchangedHistory
BLFSBiolife Solutions IncCOM NEW41,500$917.1K0.7%00.0%UnchangedHistory
OKEONEOK IncCOM14,835$915.6K0.7%00.0%UnchangedHistory
INVEINVE Technologies, Inc.COM NEW108,124$909.3K0.7%+250+0.2%AddedHistory
SYFSynchrony FinancialCOM25,650$870.0K0.6%−1,500−5.5%ReducedHistory
PUBMPubMatic, Inc.COM CL A47,010$859.3K0.6%00.0%UnchangedHistory
CVSCVS Health CorpStock11,993$829.1K0.6%−348−2.8%ReducedHistory
WMBWilliams Companies, Inc.COM24,980$815.1K0.6%−1,000−3.8%ReducedHistory
REGNRegeneron Pharmaceuticals, Inc.COM1,022$734.3K0.5%−50−4.7%ReducedHistory
ABBVAbbVie Inc.Stock5,431$731.7K0.5%−300−5.2%ReducedHistory
Invesco Exchange Traded FD T46137V365S&P500 EQL ENR10,615$726.5K0.5%00.0%Unchanged–
Invesco QQQ Trust Series I46090E103ETF1,905$703.7K0.5%−425−18.2%Reduced–
KOPNKopin CorpCOM325,075$698.9K0.5%+24,675+8.2%AddedHistory
OESXOrion Energy Systems, Inc.COM414,747$676.0K0.5%00.0%UnchangedHistory
IVACIntevac IncCOM173,375$650.2K0.5%+6,275+3.8%AddedHistory
SHELShell plcADR10,100$609.8K0.4%00.0%UnchangedHistory
CYRXCryoport, Inc.COM PAR $0.00134,930$602.5K0.4%00.0%UnchangedHistory
RRCRange Resources CorpCOM19,700$579.2K0.4%00.0%UnchangedHistory
TBIOTelesis Bio Inc.COM363,770$574.8K0.4%+21,300+6.2%AddedHistory
NVSNovartis AGADR5,460$551.0K0.4%00.0%UnchangedHistory
IBMInternational Business Machines CorpStock4,100$548.6K0.4%−100−2.4%ReducedHistory
FISVFiserv IncStock4,330$546.2K0.4%−100−2.3%ReducedHistory
PIMFranklin Master Intermediate Income TrustSH BEN INT166,963$527.6K0.4%00.0%UnchangedHistory
EMREmerson Electric CoStock5,800$524.3K0.4%00.0%UnchangedHistory
METAMeta Platforms, Inc.Stock1,800$516.6K0.4%00.0%UnchangedHistory
SKYChampion Homes, Inc.Stock7,829$512.4K0.4%+7,829NewHistory
FAFFirst American Financial CorpStock8,950$510.3K0.4%−1,400−13.5%ReducedHistory
iShares Tr464287556ISHARES BIOTECH3,990$506.6K0.4%00.0%Unchanged–
VMDViemed Healthcare, Inc.COM50,850$497.3K0.4%00.0%UnchangedHistory
MPMP Materials Corp.COM CL A21,725$497.1K0.4%+21,725NewHistory
BDXBecton Dickinson & CoStock1,874$494.8K0.4%−10−0.5%ReducedHistory
CVECenovus Energy Inc.COM28,800$489.0K0.4%00.0%UnchangedHistory
MRKMerck & Co., Inc.Stock4,206$485.3K0.4%00.0%UnchangedHistory
BBSIBarrett Business Services IncCOM5,400$470.9K0.3%−100−1.8%ReducedHistory
ABNBAirbnb, Inc.Stock3,500$448.6K0.3%00.0%UnchangedHistory
QDELQuidelOrtho CorpCOM5,240$434.2K0.3%+5,240NewHistory
DMLPDorchester Minerals, L.P.COM UNIT14,000$419.4K0.3%00.0%UnchangedHistory
FFord Motor CoStock27,175$411.2K0.3%00.0%UnchangedHistory
TUSKMammoth Energy Services, Inc.COM81,300$392.7K0.3%00.0%UnchangedHistory
LINCLincoln Educational Services CorpCOM57,805$389.6K0.3%00.0%UnchangedHistory
IMMRImmersion CorpCOM50,580$358.1K0.3%00.0%UnchangedHistory
CHGGChegg, IncCOM39,790$353.3K0.3%+12,025+43.3%AddedHistory
Invesco Exchange Traded FD T46137V357S&P500 EQL WGT2,170$324.7K0.2%00.0%Unchanged–
COPConocoPhillipsStock3,120$323.3K0.2%00.0%UnchangedHistory
BNEDBarnes & Noble Education, Inc.COM228,705$288.2K0.2%00.0%UnchangedHistory
UTGReaves Utility Income FundCOM SH BEN INT10,450$286.5K0.2%+10,450NewHistory
AFLAflac IncStock4,100$286.2K0.2%00.0%UnchangedHistory
ETEnergy Transfer LPCOM UT LTD PTN22,118$280.9K0.2%00.0%UnchangedHistory
TAT&T Inc.Stock17,430$278.0K0.2%+17,430NewHistory
HTGCHercules Capital, Inc.COM18,548$274.5K0.2%+511+2.8%AddedHistory
CVXChevron CorpStock1,700$267.5K0.2%00.0%UnchangedHistory
EGIOEdgio, Inc.COM396,370$267.2K0.2%+10,000+2.6%AddedHistory
XGNExagen Inc.COM74,010$214.6K0.2%00.0%UnchangedHistory
WLYJohn Wiley & Sons, Inc.CL A5,900$200.8K0.1%00.0%UnchangedHistory
ARCCAres Capital CorpCEF10,540$198.0K0.1%00.0%UnchangedHistory
DBIDesigner Brands Inc.CL A19,345$195.4K0.1%00.0%UnchangedHistory
Nuveen PFD & Incm Securties67072C105COM30,000$191.4K0.1%+2,000+7.1%Added–
VKQInvesco Municipal TrustCOM20,000$188.6K0.1%00.0%UnchangedHistory
MINAberdeen Intermediate Income FundSH BEN INT66,129$181.2K0.1%−800−1.2%ReducedHistory
IDNIntellicheck, Inc.COM NEW72,400$178.8K0.1%00.0%UnchangedHistory
NUVNuveen Municipal Value Fund IncCOM20,000$174.0K0.1%00.0%UnchangedHistory
AMAntero Midstream CorpStock10,000$116.0K0.1%00.0%UnchangedHistory
NVVENuvve Holding Corp.COM104,835$62.4K<0.1%−23,800−18.5%ReducedHistory

Options (2)

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 Q2 2023
SecurityClassPutsCalls
Axcelis Technologies Inc054540958PUT$733–
Photronics Inc719405952PUT$129–

Sold out since Q1 2023 (4)

Positions held at the end of Q1 2023 that are gone from this filing.

Positions of Penbrook Management LLC sold out since Q1 2023
SecurityClassShares in Q1 2023Value in Q1 2023% of portfolio in Q1 2023History
TRIThomson Reuters CorpCOM NEW27,011$3.51M2.8%History
AZTAAzenta, Inc.COM31,865$1.42M1.1%History
IMDXInsight Molecular Diagnostics Inc.COM207,675$73.6K0.1%History
DMDesktop Metal, Inc.COM CL A22,600$52.0K<0.1%History