13F

Investor

WOODSTOCK CORP

CIK 0001008877 · filed 2026-04-08 · SEC filing

13F book

$1.12B

Positions

156

5 new · 5 sold

Largest name

8.5%

Nvidia Corp · NVDA

Est. mark

−$36.5M

Price effect on 151 names still held. Flow −$5.31M.
NameTickerSharesValueWeightEst. markChange
Nvidia CorpNVDA546.5K$95.3M8.5%−$6.61MCut−$12.8M
Microsoft CorpMSFT158.3K$58.6M5.2%−$18MCut−$18M
Oreilly Automotive Inc556.5K$51.4M4.6%$612.1KCut$453K
Alphabet Inc158.3K$45.4M4.0%−$4.27MCut−$4.98M
Apple Inc.AAPL167.5K$42.5M3.8%−$3.03MCut−$3.36M
Intuitive Surgical IncISRG81K$37.4M3.3%−$8.54MCut−$9.26M
Alphabet Inc112.3K$32.3M2.9%−$2.86MCut−$3.19M
RTX CorpRTX145.3K$28M2.5%$1.38MCut$727.9K
Costco Whsl Corp New21.9K$21.9M1.9%$2.94MCut$2.74M
Jpmorgan Chase & Co.68.9K$20.3M1.8%−$1.93MCut−$1.94M
AbbVie Inc.ABBV93.1K$20.2M1.8%−$1.02MCut−$1.04M
Exxon Mobil Corp118.3K$20.1M1.8%$5.84MCut$5.65M
Home Depot, Inc.HD60.1K$19.8M1.8%−$913.8KCut−$980.9K
Johnson & JohnsonJNJ80.4K$19.7M1.7%$3.01MCut$2.93M
Fortinet, Inc.FTNT234.5K$19.2M1.7%$541.7KCut−$957K
Walmart Inc.WMT140.1K$17.4M1.6%$1.8MCut$1.48M
Ishares Tr159.9K$15.5M1.4%$153.5KCut−$178.5K
Oracle Corp105.5K$15.5M1.4%−$5.04MCut−$5.84M
Regeneron Pharmaceuticals, Inc.REGN19.9K$15.3M1.4%$14.4KAdded$948.5K
Merck & Co., Inc.MRK124.5K$15M1.3%$1.86MAdded$1.96M
APA CorpAPA352.7K$15M1.3%$5.89MAdded$6.96M
Shell Plc152.7K$14.2M1.3%$2.84MAdded$3.5M
Abbott LabsABT137K$14.1M1.3%−$3.07MAdded−$2.91M
Cisco Sys Inc174.3K$13.5M1.2%$97.6KCut$47.6K
Pepsico IncPEP85.9K$13.3M1.2%$1.01MCut$820.8K
Idexx Labs Inc23.7K$13.3M1.2%−$2.71MCut−$3.06M
Ecolab Inc.ECL48K$12.8M1.1%$168.1KCut$70.7K
Nextera Energy Inc137.6K$12.8M1.1%$1.73MCut$1.63M
Emerson Elec Co96K$12.6M1.1%−$163KAdded−$155.3K
State Str Corp96.9K$12.3M1.1%−$237.4KCut−$347.7K
Fedex CorpFDX34K$12.1M1.1%$2.29MAdded$2.3M
Illinois Tool Wks Inc46.2K$12M1.1%$642.2KAdded$721.3K
Visa Inc.V38.7K$11.7M1.0%−$1.86MAdded−$1.72M
Automatic Data Processing In55.9K$11.4M1.0%−$3.02MCut−$3.08M
Eli Lilly & CoLLY12.1K$11.1M1.0%−$1.85MAdded−$1.75M
Applied Matls Inc32.2K$11M1.0%$2.73MCut$2.65M
Chevron Corp NewCVX52.2K$10.8M1.0%$2.59MAdded$3.55M
Medtronic PlcMDT122.1K$10.6M0.9%−$1.15MCut−$1.22M
Procter And Gamble CoPG72.6K$10.5M0.9%$82.1KCut−$223.3K
Berkshire Hathaway Inc Del21.5K$10.3M0.9%−$491KAdded−$232.2K
Amazon Com IncAMZN49.1K$10.2M0.9%−$836.2KAdded$1.68M
Air Prods & Chems Inc34.4K$10M0.9%$1.5MCut$1.07M
Chubb Limited26.6K$8.67M0.8%$367.5KCut$345.6K
Zscaler, Inc.ZS60.9K$8.55M0.8%−$4.29MAdded−$2.85M
Analog Devices IncADI24.7K$7.85M0.7%$1.16MAdded$1.18M
Bank America Corp158.6K$7.73M0.7%−$991.5KCut−$1.02M
Disney Walt Co79.5K$7.66M0.7%−$1.36MAdded−$1.2M
Thermo Fisher Scientific Inc.TMO14.5K$7.14M0.6%−$1.25MAdded−$1.12M
Iron Mtn Inc Del65.5K$6.69M0.6%$1.22MAdded$1.4M
Tractor Supply Co145.2K$6.58M0.6%−$683.8KCut−$710.8K
3M COMMM45.2K$6.56M0.6%−$672KCut−$712.8K
Vanguard Intl Equity Index F120.4K$6.51M0.6%$34.9KCut$27.4K
Southern Co66.2K$6.39M0.6%$606.4KAdded$715.9K
Spdr S&P 500 Etf Tr9.08K$5.91M0.5%−$280.5KAdded−$153.6K
Sysco CorpSYY79.5K$5.67M0.5%−$186.9KAdded−$165.8K
Qualcomm Inc42.6K$5.48M0.5%−$1.8MCut−$2.15M
EXPAND ENERGY CorpEXE46K$5.05M0.4%−$26.7KCut−$74.1K
Fiserv IncFISV90.4K$5.04M0.4%−$861.7KAdded−$48.5K
Flowserve CorpFLS68.2K$5.01M0.4%$281.6KCut$215K
Hershey CoHSY24.1K$5.01M0.4%$487.4KAdded$1.59M
Generac Hldgs Inc25.6K$4.99M0.4%$1.51MCut$1.47M
Mcdonalds CorpMCD14.7K$4.57M0.4%$74KAdded$187.4K
Roper Technologies IncROP12.6K$4.44M0.4%−$1.08MAdded−$803.2K
Amgen IncAMGN12.6K$4.44M0.4%$309.8KCut$277.1K
Stryker CorpSYK13.4K$4.41M0.4%−$306.8KCut−$564.4K
Dexcom IncDXCM64K$4.02M0.4%−$194.5KAdded$405K
Lowes Cos Inc16.5K$3.89M0.3%−$80.1KAdded−$61.6K
Ligand Pharmaceuticals Inc19.1K$3.82M0.3%$202.3KCut$35K
Spdr S&P Midcap 400 Etf Tr6.06K$3.74M0.3%$81.6KAdded$84.7K
Comcast Corp New129.9K$3.73M0.3%−$153.3KCut−$171.6K
Pnc Finl Svcs Group Inc17.4K$3.63M0.3%−$11.1KAdded$1.37K
Coca Cola CoKO47.1K$3.58M0.3%$288.9KCut$149.1K
Bank New York Mellon Corp29.1K$3.45M0.3%$73.9KHeld
United Parcel Service IncUPS33.5K$3.29M0.3%−$27.1KCut−$201.4K
Sherwin Williams CoSHW10.2K$3.26M0.3%−$26.9KAdded$758.8K
Ge Aerospace9.87K$2.8M0.2%−$239.3KCut−$1.59M
Ishares Tr28.6K$2.78M0.2%$31.4KCut$21.8K
GE Vernova Inc.GEV3.17K$2.76M0.2%$694.6KCut$601.8K
Pfizer IncPFE92.7K$2.6M0.2%$294.9KCut$145.3K
Chart Inds Inc11.7K$2.41M0.2%$6.07KHeld
Enbridge Inc44K$2.38M0.2%$277.4KCut$126.2K
Lincoln Natl Corp Ind65.7K$2.33M0.2%−$593.5KCut−$627.6K
Bristol-Myers Squibb Co37.7K$2.29M0.2%$252.9KCut$198.5K
Ishares Tr16.2K$2.2M0.2%$228.3KHeld
Netflix IncNFLX22.3K$2.14M0.2%New
General Dynamics CorpGD6.07K$2.08M0.2%$39.8KCut$23.7K
Ishares Tr8.12K$2.01M0.2%$14.9KCut−$768.1K
Cvs Health CorpCVS27.4K$1.96M0.2%−$206.3KCut−$433.3K
Verizon Communications IncVZ36.4K$1.83M0.2%$344.6KCut−$204.8K
Vertex Pharmaceuticals Inc4K$1.79M0.2%−$27.3KHeld
Colgate Palmolive CoCL18.4K$1.57M0.1%$114.1KCut$106.6K
Occidental Pete Corp22.9K$1.49M0.1%$211.5KAdded$1.13M
American Express CoAXP4.41K$1.33M0.1%−$297.5KCut−$387.1K
CARRIER GLOBAL CorpCARR21K$1.18M0.1%$73KCut$71.5K
Dominion Energy, IncD19K$1.17M0.1%$61.3KCut$15K
Marvell Technology, Inc.MRVL11.7K$1.16M0.1%$163.4KAdded$173.3K
Marathon Pete Corp4.71K$1.15M0.1%$383.9KCut$382.3K
Akamai Technologies IncAKAM9.92K$1.14M0.1%$273.8KHeld
Vanguard Tax-Managed Fds17.2K$1.1M0.1%$27.8KHeld
Caterpillar IncCAT1.56K$1.1M0.1%$211.1KHeld
Kimberly Clark CorpKMB11.3K$1.09M0.1%−$50KCut−$100.4K
Electronic Arts Inc.EA5.11K$1.04M0.1%−$2.35KHeld
Shopify Inc.SHOP8.47K$1.01M0.1%−$358.9KHeld
Neurocrine Biosciences IncNBIX7.19K$947.5K0.1%−$72.6KHeld
Uber Technologies, IncUBER12.6K$902.8K0.1%−$122.7KCut−$151.2K
EyePoint, Inc.EYPT68.5K$882.5K0.1%−$368.3KHeld
Tic Solutions Inc124.9K$821.6K0.1%−$440.8KHeld
Freeport-Mcmoran IncFCX12.2K$717.4K0.1%$93.5KAdded$122.9K
Otis Worldwide CorpOTIS9.06K$698.1K0.1%−$93KCut−$171.8K
Devon Energy Corp New13.4K$673.6K0.1%$183.3KHeld
Select Sector Spdr Tr5K$664.5K0.1%−$55.3KHeld
Sun Life Financial Inc.9.65K$603.5K0.1%$1.54KHeld
Slb Limited/NvSLB11.1K$570.8K0.1%$144.5KCut$126.8K
Eqt CorpEQT8.61K$547.7K0.0%$86.4KHeld
Varonis Sys Inc24.5K$526.6K0.0%−$277.9KHeld
S&P Global Inc.SPGI1.14K$483.6K0.0%−$110.6KCut−$116.8K
Autozone IncAZO143$483K0.0%−$1.96KHeld
Novartis Ag3.03K$462.7K0.0%$45.1KCut$38.5K
Biomarin Pharmaceutical IncBMRN8.18K$461.9K0.0%−$24KHeld
Fidelity 500 Index2.03K$461.5K0.0%−$20.9KHeld
Alibaba Group Hldg Ltd3.64K$456.9K0.0%−$76.9KHeld
Aldeyra Therapeutics, Inc.ALDX266.8K$450.8K0.0%−$931KHeld
Ishares Tr3.45K$428.6K0.0%$14.3KCut−$682.4K
Poet Technologies Inc.POET67.9K$403.3K0.0%−$26.5KHeld
American Funds Growth Fund Of Amer F15.49K$402K0.0%−$35.3KHeld
Valero Energy Corp1.44K$355.1K0.0%$121.1KHeld
Te Connectivity PlcTEL1.69K$353.2K0.0%−$31.2KHeld
Aflac IncAFL3.2K$351.1K0.0%−$1.79KHeld
At&T Inc11.7K$338.5K0.0%$48.5KCut$27.3K
Mastercard IncMA677$338.3K0.0%−$48.2KCut−$49.9K
Vanguard Index Fds1.01K$324.7K0.0%−$14.6KCut−$40.4K
American Tower Corp New1.88K$323.9K0.0%−$5.61KHeld
Ge Healthcare Technologies I4.53K$322.3K0.0%−$49.1KCut−$51.1K
Linde PlcLIN643$318.8K0.0%$44.6KCut$43.8K
Tjx Cos Inc New1.96K$313K0.0%$11.9KHeld
Ouster, Inc.OUST17K$311.7K0.0%New
Insperity, Inc.NSP11.3K$305.5K0.0%−$132KCut−$132.9K
Comstock Res Inc14.3K$302.4K0.0%−$30.1KHeld
Intuit Inc.INTU662$286.2K0.0%−$152.3KCut−$157.6K
International Business Machs1.18K$285.3K0.0%−$61KAdded−$50.3K
Meta Platforms, Inc.META470$268.9K0.0%New
Resmed Inc1.18K$264.9K0.0%−$19.3KHeld
Amphenol Corp New2.04K$257.8K0.0%−$17.9KHeld
Mccormick & Co Inc5.02K$253.2K0.0%−$83.7KAdded−$69.4K
Vanguard Tl Int Stock Index5.84K$240.8K0.0%$3.9KAdded$3.94K
Union Pac Corp990$240.2K0.0%$11.2KCut−$1.53K
Vanguard Total Stock Mkt1.5K$234.6K0.0%−$10.5KHeld
Tesla, Inc.TSLA605$224.9K0.0%−$46.8KAdded−$44.9K
Honeywell Intl Inc900$203.4K0.0%$27.8KCut−$8.25K
Goodrx Hldgs Inc102K$200K0.0%−$76.5KHeld
Alpha Tau Medical Ltd20.6K$145.7K0.0%New
Bicycle Therapeutics PlcBCYC29.1K$135.2K0.0%−$71.1KHeld
Omniab Inc34.4K$54K0.0%−$9.64KCut−$11.2K
Elme CommunitiesELME20.4K$41K0.0%−$313.6KHeld
Natbridge Resources Ltd30K$12.9K0.0%New
Jason Industries Inc10.7K$1920.0%$0Held

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.