Alger
Our archive holds 67 letters from Alger, behind 50 investment theses and positions in 60 companies. Every quote below is copied verbatim from the letter it came from.
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11 strategies
Alger publishes a letter per strategy. Each one has its own page with what it holds, what it bought and what it wrote.
- Alger Focus Equity Fund8
US · 11 companies
- Alger International Opportunities Fund8
International Large-cap Opportunistic · 16 companies
YTD −2.1% · 1Y +13.2% · 3Y +10.3%/yr (Mar 31, 2026)
- Alger Mid Cap Growth Fund7
Mid-cap Growth · 11 companies
- Alger Small Cap Focus Fund7
US Small-cap · 12 companies
YTD +17.5% · 1Y +21.8% · 3Y +17.3%/yr (Sep 30, 2026)
- Alger Weatherbie Specialized Growth Fund7
Growth · 9 companies
YTD −3.6% · 1Y −1.8% · 3Y +7.1%/yr (Sep 30, 2026)
- Alger Mid Cap Focus Fund6
US Mid-cap · 12 companies
YTD +17.5% · 1Y +21.8% · 3Y +17.3%/yr (Sep 30, 2026)
- Alger Small Cap Growth Fund6
Small-cap Growth · 4 companies
- Alger Capital Appreciation Fund5
8 companies
YTD +15.9% · 1Y +14.9% · 3Y +37.9%/yr (Sep 30, 2026)
- Alger Spectra Fund5
8 companies
YTD +11.7% · 1Y +10.3% · 3Y +34.8%/yr (Sep 30, 2026)
- Alger Dynamic Opportunities Fund4
Opportunistic · 10 companies
YTD +5.6% · 1Y +4.1% · 3Y +14.9%/yr (Sep 30, 2026)
- Alger Growth & Income Fund4
Income · 7 companies
YTD +13.6% · 1Y +17.7% · 3Y +22.7%/yr (Sep 30, 2026)
Returns as reported in each strategy’s latest letter, extracted automatically and not verified by us; one share class, in its own currency. Not investment advice. Past performance does not predict future returns.
What they bought and sold · 3 moves
- ExitedForte Biosciences Inc.September 2026
“The acquisition, which closed in late August, validated our view that FB102 holds meaningful strategic value as its clinical profile became clearer.”
Read the letter - ExitedHeidelberg Materials AGMarch 2026
“During the quarter, shares detracted from performance after quarterly results came in modestly below expectations on both revenue and earnings.”
Read the letter - AddedFTAI Aviation Ltd.March 2026
“During the quarter, shares contributed positively to performance fueled by several reinforcing catalysts.”
Read the letter
Companies held · 60
Every company Alger has disclosed a position in across our archive, with the letter that last mentioned it.
- Adaptive Biotechnologies Corp.Sep 2026
- Amazon.com Inc.Mar 2026
- Apple Inc.Sep 2026
- AppLovin Corp.Mar 2026
- Astera Labs, Inc.Sep 2026
- Blue Origin Enterprises, L.P.Jun 2026
- Boehringer Ingelheim GroupJun 2026
- Broadcom Inc.Sep 2026
- Brookfield Asset Management Ltd. Class AMar 2026
- Cameco CorporationMar 2026
- Cardinal Infrastructure Group, Inc.Sep 2026
- Carvana Co.Mar 2026
- Casella Waste Systems, Inc.Sep 2026
- Chevron CorporationMar 2026
- Cloudflare IncSep 2026
- Comfort Systems USA, Inc.Mar 2026
- Corning IncSep 2026
- Credo Technology Group Holding Ltd.Jun 2026
- DigitalOcean Holdings, Inc.Mar 2026
- EssilorLuxottica SAMar 2026
- Fervo Energy CompanySep 2026
- FinecoBank SpAMar 2026
- Forte Biosciences Inc.Sep 2026
- FTAI Aviation Ltd.Sep 2026
- GE Vernova Inc.Sep 2026
- GeneDx Holdings Corp.Jun 2026
- GFL Environmental IncJun 2026
- Guardant Health, Inc.Jun 2026
- Hamilton Lane IncorporatedSep 2026
- Heidelberg Materials AGMar 2026
- Impinj, Inc.Sep 2026
- Karman Holdings Inc.Jun 2026
- KLA CorporationSep 2026
- Kongsberg Gruppen ASAMar 2026
- Legence Corp.Mar 2026
- Meta Platforms IncSep 2026
- Microsoft CorporationSep 2026
- Mizuho Financial Group, Inc.Sep 2026
- Modine Manufacturing CompanySep 2026
- MongoDB, Inc.Mar 2026
- Natera, Inc.Sep 2026
- Nebius Group N.V. Class ASep 2026
- Netflix, Inc.Jun 2026
- NVIDIA CorporationSep 2026
- Planet Fitness, Inc.Mar 2026
- QXO, Inc.Jun 2026
- RBC Bearings IncorporatedSep 2026
- Repligen CorporationSep 2026
- Sea LimitedMar 2026
- Shopify, Inc.Sep 2026
- SK hynix Inc.Sep 2026
- Snowflake, Inc.Sep 2026
- Space Exploration Technologies Corp.Sep 2026
- StepStone Group, Inc.Mar 2026
- Taiwan Semiconductor Manufacturing Co., Ltd.Sep 2026
- Twilio, Inc.Sep 2026
- Twist Bioscience Corp.Sep 2026
- Vertiv Holdings Co.Mar 2026
- VSE CorporationSep 2026
- Western Digital CorporationSep 2026
Theses · 50
- September 2026
Natera is a diagnostic-testing company whose Signatera blood test is gaining adoption thanks to clinical evidence, reimbursement, guidelines, and international expansion.
Read the full thesis - September 2026
Forte Biosciences is a clinical-stage biotech developing FB102, which is viewed as differentiated and strategically valuable across multiple autoimmune diseases.
Read the full thesis - September 2026
Twilio provides communications infrastructure that should benefit from AI-driven customer engagement and is showing improving growth, profitability, and cash flow.
Read the full thesis - Space Exploration Technologies Corp.September 2026
SpaceX combines reusable rockets, Starlink, and AI infrastructure, with durable cost advantages and recurring revenue supporting a compelling long-term profile.
Read the full thesis - September 2026
Twist Bioscience manufactures custom DNA at scale and is seen as well positioned to benefit from AI-driven drug discovery demand and accelerating orders.
Read the full thesis - September 2026
Adaptive Biotechnologies develops immune-system diagnostics and is supported by improving results, a path to profitability, and broader clinical adoption of clonoSEQ.
Read the full thesis - Cardinal Infrastructure Group, Inc.September 2026
Cardinal Infrastructure provides site-development services and is viewed as having a durable growth opportunity due to project management, customer relationships, and market expansion.
Read the full thesis - September 2026
RBC Bearings makes engineered bearings and motion-control components and is supported by engineering expertise, pricing power, recurring demand, and long-term aerospace and defense opportunities.
Read the full thesis - September 2026
VSE Corporation provides aviation services and is viewed as attractive due to aging fleets, outsourcing demand, expanding repair capabilities, and efficiency gains from integration.
Read the full thesis - September 2026
Cloudflare benefits from its global network, expanding product suite, and AI-driven demand across security, networking, and developer services.
Read the full thesis - September 2026
FTAI Aviation combines an integrated engine-maintenance platform with data-center power opportunities and benefits from constrained repair capacity and strong demand.
Read the full thesis - September 2026
Western Digital is positioned to benefit from data growth and AI storage demand through its scale, profitability, and low-cost hard drive leadership.
Read the full thesis
- NVIDIA CorporationSep 2026
- Meta Platforms IncSep 2026
- Astera Labs, Inc.Sep 2026
- Modine Manufacturing CompanySep 2026
- Impinj, Inc.Sep 2026
- Casella Waste Systems, Inc.Sep 2026
- Mizuho Financial Group, Inc.Sep 2026
- Shopify, Inc.Sep 2026
- Taiwan Semiconductor Manufacturing Co., Ltd.Sep 2026
- SK hynix Inc.Sep 2026
- Western Digital CorporationJun 2026
- Nebius Group N.V.Jun 2026
- Astera Labs, Inc.Jun 2026
- QXO, Inc.Jun 2026
- Credo Technology Group Holding Ltd.Jun 2026
- Kongsberg Gruppen ASAMar 2026
- Cameco CorporationMar 2026
- Casella Waste Systems, Inc.Mar 2026
- Cameco CorporationMar 2026
- AppLovin Corp.Mar 2026
- Jiangsu Hengrui PharmaceuticalsDec 2025
- Nebius Group N.V.Dec 2025
- Axon EnterpriseSep 2025
- NintendoJun 2025
- SK HynixJun 2025
- Clearwater AnalyticsJun 2025
- AppLovinMar 2025
- Heico CorporationMar 2025
- SpotifyMar 2025
- AppLovinDec 2024
- Astera LabsDec 2024
- Monolithic Power SystemsDec 2024
- MercadoLibreDec 2024
- Taiwan Semiconductor Manufacturing Company (TSMC)Dec 2024
- BroadcomDec 2024
- KLA CorporationDec 2024
Showing the 48 most recent of 50 theses. Browse them by company to see the rest.
Letter archive · 67
2026
- Sep 2026Alger Dynamic Opportunities Fund
- Sep 2026Alger Small Cap Focus Fund
- Sep 2026Alger Mid Cap Growth Fund
- Sep 2026Alger Focus Equity Fund
- Sep 2026Alger Capital Appreciation Fund
- Sep 2026Alger Mid Cap Focus Fund
- Sep 2026Alger Growth & Income Fund
- Sep 2026Alger Weatherbie Specialized Growth Fund
- Sep 2026Alger International Opportunities Fund
- Sep 2026Alger Small Cap Growth Fund
- Sep 2026Alger Spectra Fund
- Jun 2026Alger Focus Equity Fund
- Jun 2026Alger Small Cap Focus Fund
- Mar 2026Alger Growth & Income Fund
- Mar 2026Alger Spectra Fund
- Mar 2026Alger Capital Appreciation Fund
- Mar 2026Alger Weatherbie Specialized Growth Fund
- Mar 2026Alger Mid Cap Growth Fund
- Mar 2026Alger Mid Cap Focus Fund
- Mar 2026Alger Dynamic Opportunities Fund
- Mar 2026Alger Small Cap Focus Fund
- Mar 2026Alger Focus Equity Fund
- Mar 2026Alger International Opportunities Fund
- Mar 2026Alger Small Cap Growth Fund
- Mar 2026Alger International Opportunities Fund I
- Mar 2026Alger Weatherbie Specialized Growth Fund
2025
- Dec 2025Alger Focus Equity Fund
- Dec 2025Alger Spectra Fund
- Dec 2025Alger Growth & Income Fund
- Dec 2025Alger Mid Cap Focus Fund
- Dec 2025Alger Capital Appreciation Fund
- Dec 2025Alger Mid Cap Growth Fund
- Dec 2025Alger Weatherbie Specialized Growth Fund
- Dec 2025Alger Small Cap Growth Fund
- Dec 2025Alger Small Cap Focus Fund
- Dec 2025Alger Dynamic Opportunities Fund
- Dec 2025Alger International Opportunities Fund
- Sep 2025Alger Mid Cap Growth Fund
- Jun 2025Alger Focus Equity Fund
- Jun 2025Alger Mid Cap Growth Fund
- Jun 2025Alger Spectra Fund
- Jun 2025Alger Mid Cap Focus Fund
- Jun 2025Alger Small Cap Focus Fund
- Jun 2025Alger Capital Appreciation Fund
- Jun 2025Alger Small Cap Growth Fund
- Jun 2025Alger International Opportunities Fund
- Jun 2025Alger Weatherbie Specialized Growth Fund
- Jun 2025Alger Focus Equity Fund
- Jun 2025Alger Mid Cap Growth Fund
- Jun 2025Alger Spectra Fund
- Jun 2025Alger Mid Cap Focus Fund
- Jun 2025Alger Small Cap Focus Fund
- Jun 2025Alger Capital Appreciation Fund
- Jun 2025Alger Small Cap Growth Fund
- Jun 2025Alger International Opportunities Fund
- Jun 2025Alger Weatherbie Specialized Growth Fund
- Mar 2025Alger International Opportunities Fund
- Mar 2025Alger Focus Equity Fund
2024
- Dec 2024Alger Dynamic Opportunities Fund
- Dec 2024Alger International Opportunities Fund
- Dec 2024Alger Mid Cap Growth Fund
- Dec 2024Alger Small Cap Focus Fund
- Dec 2024Alger Small Cap Growth Fund
- Dec 2024Alger Weatherbie Specialized Growth Fund
- Dec 2024Alger Mid Cap Focus Fund
- Dec 2024Alger Focus Equity Fund
- Dec 2024Alger Growth & Income Fund
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