13F

Investor

OSTERWEIS CAPITAL MANAGEMENT INC

CIK 0001007524 · filed 2026-05-15 · SEC filing

13F book

$1.94B

Positions

229

18 new · 74 sold

Largest name

4.8%

Alphabet Inc

Est. mark

−$50.4M

Price effect on 211 names still held. Flow −$373.5M.
NameTickerSharesValueWeightEst. markChange
Alphabet Inc327.2K$93.8M4.8%−$8.81MCut−$18.9M
Affirm Hldgs Inc57.5M$55.8M2.9%New
Amazon Com IncAMZN259.1K$54M2.8%−$5.84MCut−$23.7M
Microsoft CorpMSFT144.7K$53.6M2.8%−$16.4MCut−$31.9M
Applied Matls Inc142.1K$48.6M2.5%$12.1MCut$9.29M
MARRIOTT VACATIONS WORLDWIDE CorpVAC50M$48.1M2.5%New
Broadcom Inc.AVGO155.1K$48M2.5%−$5.67MCut−$15M
Analog Devices IncADI150.3K$47.8M2.5%$7.05MCut$6.6M
Visa Inc.V143.9K$43.5M2.2%−$6.85MAdded−$6.04M
Autozone IncAZO12.6K$42.6M2.2%−$155.4KAdded$4.15M
Jpmorgan Chase & Co.141.5K$41.6M2.1%−$3.9MAdded−$3.18M
JBT MAREL CorpJBTM41.3M$41.2M2.1%−$114.2KAdded$37M
Eli Lilly & CoLLY44.8K$41.2M2.1%−$6.94MAdded−$6.93M
Nvidia CorpNVDA228.7K$39.9M2.1%−$1.6MAdded$15.2M
Waste Connections, Inc.WCN240.8K$39.1M2.0%−$3.07MAdded−$2.57M
Danaher Corporation191K$36.2M1.9%−$7.4MAdded−$6.85M
PENN Entertainment, Inc.PENN35.5M$35.5M1.8%New
Q2 Hldgs Inc35.4M$35.3M1.8%New
American Wtr Wks Co Inc New256.4K$34.9M1.8%$1.43MCut−$4.66M
Terreno Rlty Corp555.7K$34.1M1.8%$1.51MCut$350.9K
Air Prods & Chems Inc114.4K$33.2M1.7%$4.97MCut−$2.15M
Pebblebrook Hotel Tr33.9M$33.1M1.7%$80KAdded$24.5M
Us Foods Hldg Corp354.1K$32.6M1.7%$5.98MCut$3.16M
Keysight Technologies, Inc.KEYS115.4K$32.6M1.7%$9.14MCut$2.03M
L3harris Technologies Inc89.9K$31M1.6%$4.64MCut−$1M
Ziff Davis, Inc.ZD30.6M$30.1M1.6%$26.5KAdded$19.7M
Progressive Corp144.8K$28.7M1.5%−$4.27MCut−$5.75M
Intercontinental Exchange In176.9K$27.8M1.4%−$816.9KAdded−$448.1K
Boston Scientific CorpBSX442.2K$27.7M1.4%−$8.79MAdded$2.05M
Ferguson Enterprises Inc117.7K$27.5M1.4%$1.25MCut$905K
Brown & Brown, Inc.BRO397.3K$25.9M1.3%−$5.76MCut−$8.02M
Lamar Advertising Co/NewLAMR201.2K$25.5M1.3%$16.1KCut−$6.89M
Canadian Pacific Kansas City322.2K$25.3M1.3%$1.62MCut$1.52M
Ametek Inc/AME116.9K$25.1M1.3%$1.06MCut−$4.34M
Deere & CoDE43.5K$24.5M1.3%$4.25MCut$4.23M
AbbVie Inc.ABBV107.5K$23.4M1.2%−$41.3KAdded$22.5M
Boeing Co109.1K$21.7M1.1%−$1.97MAdded−$1.89M
Public Storage Oper Co78.8K$21.3M1.1%New
Labcorp Holdings Inc.LH77K$20.5M1.1%$1.21MAdded$1.46M
Slb Limited/NvSLB373.3K$19.2M1.0%New
Nvr IncNVR2.73K$18M0.9%−$1.85MAdded−$1.19M
Synopsys IncSNPS44K$17.5M0.9%−$3.17MAdded−$2.86M
Upwork, IncUPWK14.7M$14.4M0.7%New
Meta Platforms, Inc.META25.1K$14.3M0.7%−$2.2MCut−$2.33M
Life Time Group Holdings, Inc.LTH519.6K$14M0.7%$173.8KAdded$1.17M
Axos Financial, Inc.AX163.7K$13.9M0.7%−$152.7KAdded$1.64M
Guardant Health, Inc.GH148.9K$13.8M0.7%−$1.33MAdded−$126.4K
Ceco Environmental CorpCECO226.6K$13.5M0.7%−$60.4KAdded$114.5K
Vse Corp72.6K$13.4M0.7%$563.6KAdded$5.02M
Vericel CorpVCEL401K$12.9M0.7%−$1.24MAdded$1.27M
Novartis Ag83.8K$12.8M0.7%$1.25MCut$710.4K
Novanta Inc107K$12.6M0.7%−$89.5KAdded$543K
Corpay, Inc.CPAY41.9K$12.2M0.6%−$416.2KCut−$884.1K
Casella Waste Sys Inc148.3K$11.8M0.6%−$2.76MCut−$3.98M
Apple Inc.AAPL45.6K$11.6M0.6%−$823.6KCut−$881.2K
Repligen CorpRGEN92.2K$10.9M0.6%−$2.52MAdded$1.91M
Glaukos CorpGKOS94.9K$10.2M0.5%−$498KCut−$1.26M
Twist Bioscience CorpTWST211.2K$10M0.5%$3.34MCut$1.89M
AtriCure, Inc.ATRC349.6K$9.98M0.5%−$2.25MAdded$1.92M
Digitalocean Hldgs Inc116K$9.95M0.5%New
Nextpower Inc.NXT82.3K$9.93M0.5%$1.61MAdded$5.72M
Lattice Semiconductor CorpLSCC105.9K$9.82M0.5%$2.03MCut−$1.99M
SPX Technologies, Inc.SPXC49K$9.79M0.5%−$5.78KAdded$164.6K
Firstservice Corp New64.9K$9.01M0.5%−$1.08MCut−$6.9M
Artivion, Inc.AORT240.2K$8.8M0.5%−$1.98MAdded−$1.27M
Sitime CorpSITM25.1K$8.68M0.4%−$197.1KCut−$2.16M
Boot Barn Hldgs Inc58.7K$8.59M0.4%New
Twilio IncTWLO65.9K$8.3M0.4%−$906.6KAdded$441.5K
Palomar Hldgs Inc68.1K$8.14M0.4%−$877.6KAdded$386.7K
Macom Tech Solutions Hldgs I36.5K$8.12M0.4%$1.86MCut−$2.33M
Hinge Health, Inc.HNGE210.3K$8.11M0.4%−$1.36MAdded$106.5K
Loar Holdings Inc.LOAR138.4K$7.93M0.4%New
Modine Mfg Co34.2K$7.42M0.4%$2.85MCut−$4.5M
Transcat IncTRNS100.5K$7.38M0.4%New
Rambus Inc Del84.9K$7.31M0.4%−$497.7KCut−$877.7K
Etsy IncETSY7.75M$6.94M0.4%−$2.71KHeld
Cava Group, Inc.CAVA83.7K$6.77M0.3%$1.86MCut$1.64M
Cardinal Infrastructure Grou169.9K$6.74M0.3%$1.18MAdded$4.9M
Alignment Healthcare, Inc.ALHC347K$6.11M0.3%New
Cogent Biosciences, Inc.COGT150.8K$5.8M0.3%New
Turning Pt Brands Inc58.9K$5.11M0.3%−$1.27MCut−$4.06M
Chime Finl Inc205.1K$3.84M0.2%−$1.32MCut−$6.79M
ServiceTitan, Inc.TTAN59.5K$3.77M0.2%−$2.56MCut−$8.69M
Fastly, Inc.FSLY125.5K$3.65M0.2%New
Berkshire Hathaway Inc Del5$3.59M0.2%−$183.3KHeld
Autodesk, Inc.ADSK14K$3.35M0.2%−$792.5KHeld
Enterprise Prods Partners L87.8K$3.32M0.2%$507.6KHeld
Affirm Hldgs Inc60.8K$2.78M0.1%−$1.32MAdded−$655.3K
Procept Biorobotics CorpPRCT101.3K$2.53M0.1%−$653.5KCut−$4.94M
Berkshire Hathaway Inc Del5.28K$2.53M0.1%−$123.9KCut−$385.8K
Procter And Gamble CoPG16.1K$2.33M0.1%$18.2KCut−$129.1K
Silicon Motion Technology CORPSIMO18.7K$2.1M0.1%$365.5KCut−$3.13M
Exxon Mobil Corp10.8K$1.83M0.1%$532.5KHeld
Workday, Inc.WDAY12.7K$1.66M0.1%−$509.2KAdded$366.9K
Schwab Strategic Tr57.7K$1.45M0.1%−$65.2KCut−$915.9K
Alphabet Inc4.98K$1.43M0.1%−$126.6KCut−$477.2K
Fair Isaac CorpFICO1.29K$1.38M0.1%−$805KHeld
Palantir Technologies Inc.PLTR9.2K$1.35M0.1%−$289.6KHeld
Johnson & JohnsonJNJ4.43K$1.08M0.1%$166.1KCut$149.8K
Vanguard Index Fds1.74K$1.04M0.1%−$51.3KCut−$393K
Union Pac Corp4K$971.2K0.1%$45.2KCut−$14K
Essex Ppty Tr Inc4K$968K0.1%−$78.7KHeld
Select Sector Spdr Tr5.18K$688.7K0.0%−$57.4KHeld
First Tr Exchange Trad Fd Vi23.9K$685.5K0.0%$130.9KCut$37.9K
Ishares Tr6.24K$564.9K0.0%$6.68KHeld
Merck & Co., Inc.MRK4.18K$503.2K0.0%$62.9KCut$36.8K
Pimco Etf Tr5.37K$500.9K0.0%−$8.32KHeld
Vanguard Star Fds6.05K$466.3K0.0%$4.7KAdded$253.6K
American Express CoAXP1.51K$458.3K0.0%−$102.2KCut−$105.9K
Clorox Co Del4.41K$457.1K0.0%New
Costco Whsl Corp New455$453.4K0.0%$61KCut$31.7K
Ishares Tr9K$436.1K0.0%−$2.61KHeld
Berkley W R Corp6.33K$419.6K0.0%−$24.3KHeld
Home Depot, Inc.HD1.18K$387.4K0.0%−$17.9KCut−$75.7K
Tesla, Inc.TSLA1.03K$384.4K0.0%−$80.6KHeld
Walmart Inc.WMT3.07K$381.8K0.0%$39.5KHeld
Morgan Stanley2.28K$374.9K0.0%−$29.5KHeld
Wells Fargo Co New4.31K$342.9K0.0%−$58.5KHeld
Kla CorpKLAC218$321K0.0%$56.1KHeld
RTX CorpRTX1.63K$313.5K0.0%$15.4KHeld
Spdr Series Trust3.37K$308.4K0.0%$875Held
Oracle Corp1.84K$271.4K0.0%−$88.2KCut−$102.6K
Cisco Sys Inc3.07K$238K0.0%$1.72KHeld
Crane Company1.32K$226.6K0.0%−$17.8KHeld
Ishares Tr1.89K$223.9K0.0%−$20.1KHeld
Airbnb, Inc.ABNB1.72K$216.6K0.0%−$16.2KHeld
General Dynamics CorpGD594$203.9K0.0%$3.9KHeld
Mckesson CorpMCK226$195.6K0.0%$10.2KCut$5.26K
Pnc Finl Svcs Group Inc914$190.2K0.0%−$585Held
Spdr Gold Tr427$183.7K0.0%$5.4KAdded$120.7K
Vanguard Admiral Fds Inc1.54K$177.1K0.0%$5.97KHeld
Tjx Cos Inc New1.1K$176.3K0.0%$6.72KHeld
Lam Research CorpLRCX796$170.1K0.0%$33.8KHeld
Intuitive Surgical IncISRG368$169.6K0.0%−$38.8KCut−$55.8K
Parker-Hannifin CorpPH187$167.4K0.0%$3.04KHeld
Norfolk Southn Corp582$167K0.0%−$1KHeld
Vanguard Scottsdale Fds2.85K$167K0.0%−$542Held
Quanta Svcs Inc300$164.7K0.0%$38.1KHeld
Taiwan Semiconductor Mfg Ltd473$159.9K0.0%$16.1KHeld
Disney Walt Co1.6K$154.2K0.0%−$27.8KHeld
Citigroup Inc1.31K$149K0.0%−$4.31KHeld
Vertiv Holdings CoVRT579$145.1K0.0%$51.3KHeld
Bank New York Mellon Corp1.2K$142.2K0.0%$3.04KHeld
Oreilly Automotive Inc1.51K$139.8K0.0%$1.67KHeld
Vanguard Index Fds673$138.5K0.0%−$1.52KAdded$40K
Prologis Inc.1.02K$134.8K0.0%$4.61KHeld
Abbott LabsABT1.26K$129.9K0.0%−$28.6KCut−$290.1K
Netflix IncNFLX1.3K$125K0.0%$3.11KCut−$48.5K
Chevron Corp NewCVX598$123.7K0.0%$32.6KCut$1.34K
Agnico Eagle Mines LtdAEM591$120K0.0%$19.8KHeld
Fastenal CoFAST2.55K$118.5K0.0%$16KCut−$40.4K
Old Dominion Freight Line In606$118.4K0.0%$23.4KHeld
Rbc Bearings IncRBC212$115.1K0.0%$20.1KHeld
Crowdstrike Hldgs Inc286$111.7K0.0%−$22.4KHeld
Booking Holdings Inc.BKNG25$105.3K0.0%−$28.6KCut−$34K
Nextnav Inc6.53K$104.7K0.0%−$4.05KHeld
S&P Global Inc.SPGI244$103.8K0.0%−$23.7KCut−$71.3K
EMCOR Group, Inc.EME136$100.4K0.0%$17.2KHeld
Uber Technologies, IncUBER1.33K$95.6K0.0%−$13KCut−$40.8K
Summit Therapeutics Inc.SMMT5K$94.8K0.0%$7.35KHeld
Heico Corp New344$94.3K0.0%−$17KCut−$77.5K
Salesforce, Inc.CRM502$93.7K0.0%−$39.3KCut−$25.8M
Marsh & Mclennan Cos Inc513$89K0.0%−$6.19KCut−$67K
Ha Sustainable Infra Cap Inc2.39K$87.8K0.0%$12.7KHeld
International Business Machs354$85.8K0.0%−$19.1KCut−$64.7K
Valero Energy Corp341$84.3K0.0%$28.7KHeld
Qxo Inc4.25K$82.4K0.0%$552Held
Northrop Grumman Corp119$81.2K0.0%$13.3KHeld
Lyft, Inc.LYFT6.1K$81.1K0.0%−$37KHeld
Raymond James Finl Inc560$81.1K0.0%New
Alliancebernstein Hldg L P2.12K$79.5K0.0%−$2.21KHeld
Ishares Bitcoin Trust EtfIBIT2.02K$77.5K0.0%−$10.6KAdded$30.7K
Cme Group Inc.CME258$76.2K0.0%$5.75KCut−$28.7K
MSCI Inc.MSCI137$73.8K0.0%−$4.76KHeld
Perpetua Resources Corp.PPTA2.62K$73.7K0.0%$10.3KHeld
Entergy Corp New626$70.3K0.0%$12.5KHeld
ConocophillipsCOP511$67.5K0.0%$19.6KHeld
Ishares Tr100$65.3K0.0%−$3.17KHeld
Kraneshares Trust2.29K$65.1K0.0%−$12.9KHeld
Caterpillar IncCAT91$64.5K0.0%$12.3KHeld
Micron Technology IncMU190$64.2K0.0%$9.96KCut$544
Equity Lifestyle Pptys IncELS1.01K$62.9K0.0%New
Vanguard Growth Etf143$62.6K0.0%−$7.25KHeld
Primoris Svcs Corp431$61.6K0.0%$8.15KHeld
New Found Gold Corp.NFGC31.3K$60.6K0.0%−$32.2KHeld
BlackRock, Inc.BLK62$59.6K0.0%−$6.74KCut−$18.5K
Philip Morris Intl Inc357$59K0.0%$1.76KCut−$2.41K
Eqt CorpEQT921$58.6K0.0%$9.25KHeld
Esco Technologies IncESE205$57.7K0.0%$17.6KHeld
Shopify Inc.SHOP463$54.9K0.0%−$19.6KHeld
ServiceNow, Inc.NOW525$54.9K0.0%−$25.5KCut−$172.6K
Cummins IncCMI95$51.1K0.0%$2.62KHeld
Ingersoll Rand Inc.IR631$50.6K0.0%$568Held
Idacorp IncIDA352$50.3K0.0%$5.78KHeld
Howmet Aerospace Inc.HWM208$47.9K0.0%$5.29KHeld
Marriott Intl Inc New144$47.1K0.0%$2.42KHeld
Nasdaq, Inc.NDAQ539$45.8K0.0%−$6.6KCut−$51.4K
ARS Pharmaceuticals, Inc.SPRY5.61K$45K0.0%−$20.3KHeld
Thermo Fisher Scientific Inc.TMO88$43.3K0.0%−$7.74KHeld
Adobe Inc.ADBE176$42.8K0.0%−$18.8KHeld
Columbia Bkg Sys Inc1.55K$42.6K0.0%−$807Held
Waste Mgmt Inc Del181$41.6K0.0%$1.82KCut−$18.4K
Ptc Inc.PTC289$41.2K0.0%−$9.17KHeld
Amgen IncAMGN117$41.2K0.0%$2.87KHeld
Martin Marietta Matls Inc68$40K0.0%−$2.31KHeld
Equifax IncEFX210$37.8K0.0%−$7.75KHeld
Agilent Technologies, Inc.A324$36.9K0.0%−$7.16KHeld
Goldman Sachs Group Inc43$36.4K0.0%−$1.42KHeld
Align Technology IncALGN211$36.2K0.0%$3.22KHeld
Fiserv IncFISV645$36K0.0%−$7.33KHeld
Pepsico IncPEP230$35.7K0.0%$2.71KHeld
Texas Instrs Inc180$34.9K0.0%$3.72KHeld
Reliance, Inc.RS111$33.7K0.0%$1.67KCut−$16.5K
Proshares Tr318$33.7K0.0%$577Cut−$174.6K
Broadridge Finl Solutions In199$32.3K0.0%−$12.1KHeld
Palo Alto Networks IncPANW200$32.1K0.0%−$4.78KCut−$107.9K
Carlisle Cos Inc96$32K0.0%$1.32KHeld
Advanced Micro Devices IncAMD150$30.5K0.0%−$1.61KHeld
Blackstone Secd Lending Fd1.27K$30.1K0.0%−$3.36KHeld
Stifel Finl Corp318$23.5K0.0%−$10.9KAdded−$3.04K
Tmc The Metals Company Inc4.67K$21.8K0.0%−$7.01KHeld
Pulse Biosciences, Inc.PLSE1K$21.6K0.0%$7.86KHeld
Lpl Finl Hldgs Inc70$21.1K0.0%−$3.94KHeld
Snap IncSNAP4K$18.4K0.0%−$13.9KHeld
Rivian Automotive Inc1.18K$17.7K0.0%−$5.48KHeld
Costar Group, Inc.CSGP326$13.2K0.0%New
Ishares Ethereum Tr735$11.6K0.0%−$4.85KHeld
Newsmax Inc.NMAX2.12K$11.1K0.0%−$5.32KHeld
Vertex Pharmaceuticals Inc21$9.38K0.0%−$144Held

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.