- Alkermes plc
- Alks
- Alkt
- All
- Allakos Inc.
- Allarity Therapeutics, Inc.
- Allbirds, Inc.
- Alle
- Allegheny Technologies Incorporated
- Allegiant Travel Company
- Allegion plc
- Allegro MicroSystems, Inc.
- AllianceBernstein Holding L.P.
- Alliance Resource Partners, L.P.
- Alliant Co., Inc.
- Alliant Energy Corporation
- Allison Transmission Holdings, Inc.
- Allk
- Allo
- Allogene Therapeutics, Inc.
- Allr
- Ally
- Alnt
- Alny
- Alnylam Pharmaceuticals, Inc.
- Alot
- Alovir, Inc.
- Alpha Metallurgical Resources, Inc.
- Alpha Pro Tech, Ltd.
- Alpha Teknova, Inc.
- Alpha and Omega Semiconductor Limited
- Alphatec Holdings, Inc.
- Alpine 4 Holdings, Inc.
- Alpine Income Property Trust, Inc.
- Alpp
- Alrm
- Alrn
- Alrs
- Alsa
- Alsau
- Alset EHome International Inc.
- Alsn
- Alt
- Altair Engineering Inc.
- Altg
- Alti
- Altice USA, Inc.
- Altimmune, Inc.
- Altisource Asset Management Corporation
- Altisource Portfolio Solutions S.A.
- Altm
- Alto
- Alto Ingredients, Inc.
- Altr
- Altria Group, Inc.
- Altus Midstream Company
- Alur
- Alv
- Alvr
- Alx
- Alxo
- Alzamend Neuro, Inc.
- Alzn
- Am
- Amal
- Amalgamated Financial Corp.
- Amarin Corporation plc
- Amat
- Amazon.com, Inc.
- Amba
- Ambarella, Inc.
- Ambc
- Amc
- Amcon Distributing Company
- Amcor plc
- Amcr
- Amcx
- Amd
- Ame
- Amed
- Amedisys, Inc.
- Ameren Corporation
- Ameresco, Inc.
- America's Car-Mart, Inc.
- American Airlines Group Inc.
- American Assets Trust, Inc.
- American Axle & Manufacturing Holdings, Inc.
- American Battery Technology Company
- American Eagle Outfitters, Inc.
- American Express Company
- American Independence Corp.
- American Outdoor Brands, Inc.
- American Public Education, Inc.
- American Realty Investors, Inc.
- American Resources Corporation
- American Shared Hospital Services
- American Software, Inc.
- American States Water Company
- American Strategic Investment Co.
- American Superconductor Corporation
- American Vanguard Corporation
- American Water Works Company, Inc.
- American Well Corporation
- American Woodmark Corporation
- Americold Realty Trust, Inc.
- Ameriprise Financial, Inc.
- Ameris Bancorp
- Ames National Corporation
- Amesite Inc.
- Amg
- Amgen Inc.
- Amgn
- Amh
- Amherst Residential, LLC
- Amicus Therapeutics, Inc.
- Amix
- Amk
- Amkor Technology, Inc.
- Amkr
- Amlx
- Amn
- Amneal Pharmaceuticals, Inc.
- Amp
- Ampg
- Amph
- Amphastar Pharmaceuticals, Inc.
- Amphenol Corporation
- Ampl
- Amplify Energy Corp.
- Amplitude, Inc.
- Amps
- Ampx
- Ampy
- Amr
- Amrc
- Amrk
- Amrn
- Amrx
- Ams
- Amsc
- Amsf
- Amst
- Amswa
- Amt
- Amtb
- Amtech Systems, Inc.
- Amtx
- Amwd
- Amwl
- Amylyx Pharmaceuticals, Inc.
- Amzn
- An
- Anab
- Analog Devices, Inc.
- AnaptysBio, Inc.
- Anavex Life Sciences Corp.
- Ande
- Aneb
- Anebulo Pharmaceuticals, Inc.
- Anet
- Anf
- Angel Oak Mortgage, Inc.
- Angi
- Angie's List, Inc.
- AngioDynamics, Inc.
- Ango
- Anik
- Anika Therapeutics, Inc.
- Anip
- Anix
- Anixa Biosciences, Inc.
- Annexon, Inc.
- Annovis Bio, Inc.
- Annx
- Anro
- Ansc
- Anscu
- Anss
- Anterix Inc.
- Antero Midstream Corporation
- Antero Resources Corporation
- Antx
- Anvs
- Any
- Anywhere Real Estate Inc.
- Aomr
- Aon
- Aon plc
- Aort
- Aos
- Aosl
- Aout
- Ap
- Apa
- Apam
- Apcx
- Apd
- Apdn
- Apei
- Apellis Pharmaceuticals, Inc.
- Apg
- Apge
- Aph
- Apld
- Aple
- Apls
- Aplt
- Apo
- Apog
- Apogee Enterprises, Inc.
- App
- AppFolio, Inc.
- AppLovin Corporation
- Appf
- Appian Corporation
- Apple, Inc.
- Apple Hospitality REIT, Inc.
- Applied Digital Corporation
- Applied Industrial Technologies, Inc.
- Applied Materials, Inc.
- Applied Optoelectronics, Inc.
- Applied Therapeutics, Inc.
- Appn
- Apps
- Apre
- Aprea Therapeutics, Inc.
- Apt
- AptarGroup, Inc.
- Aptevo Therapeutics Inc.
- Apto
- Aptose Biosciences, Inc.
- Aptv
- Apvo
- Apxi
- Apxiu
- Apyx
- Apyx Medical Corporation
- Aqb
- Aqms
- Aqst
- Aqu
- AquaBounty Technologies, Inc.
- Aqua Metals, Inc.
- Aquestive Therapeutics, Inc.
- Aqunu
- Ar
- Aramark
- Aray
- Arbutus Biopharma Corporation
- Arc
- ArcBest Corporation
- Arcadia Biosciences, Inc.
- Arcb
- Arcc
- Arch
- Arch Resources, Inc.
- Archer-Daniels-Midland Company
- Archrock, Inc.
- Arct
- Arcturus Therapeutics Holdings Inc.
- Arcus Biosciences, Inc.
- Arcutis Biotherapeutics, Inc.
- Ardelyx, Inc.
- Are
- Areb
- Arec
- Aren
- Ares
- Ares Commercial Real Estate Corporation
- Argan, Inc.
- Arhaus, Inc.
- Arhs
- Ari
- Aris
- Aris Water Solutions, Inc.
- Arista Networks, Inc.
- Ark Restaurants Corp.
- Arko
- Arkr
- Arl
- Arlo
- Arlo Technologies, Inc.
- Arlp
- Armata Pharmaceuticals, Inc.
- Armk
- Armp
- Armstrong World Industries, Inc.
- Aroc
- Arow
- Arq
- Arqit Quantum Inc.
- Arqt
- Arr
- Array Technologies, Inc.
- Arrow Electronics, Inc.
- Arrow Financial Corporation
- Arrowhead Pharmaceuticals, Inc.
- Arry
- Art's-Way Manufacturing Co., Inc.
- Arteris, Inc.
- Arthur J. Gallagher & Co.
- Artisan Partners Asset Management Inc.
- Artivion, Inc.
- Artl
- Artna
- Artw
- Arvinas, Inc.
- Arvn
- Arw
- Arwr
- Aryd
- Asan
- Asana, Inc.
- Asb
- Asbury Automotive Group, Inc.
- Ascent Industries Co.
- Ascent Solar Technologies, Inc.
- Asensus Surgical, Inc.
- Asgn
- Ash
- Ashford Inc.
- Asix
- Asle
- Asmb
- Asns
- Aso
- Aspen Aerogels, Inc.
- Aspen Technology, Inc.
- Aspi
- Aspira Women's Health Inc.
- Aspira Women’s Health Inc.
- Aspn
- Asps
- Asrt
- Asrv
- Assembly Biosciences, Inc.
- Assertio Holdings, Inc.
- AssetMark Financial Holdings, Inc.
- Associated Capital Group, Inc.
- Asst
- Assure Holdings Corp.
- Astc
- Aste
- Astec Industries, Inc.
- Asth