- 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
- Asti
- Astria Therapeutics, Inc.
- AstroNova, Inc.
- Astrotech Corporation
- Asts
- Asur
- Asure Software, Inc.
- Asxc
- Asys
- Atai
- Atara Biotherapeutics, Inc.
- Atch
- Atea Pharmaceuticals, Inc.
- Atec
- Atek
- Aten
- Ater
- Aterian, Inc.
- Atex
- Atge
- Atha
- Athira Pharma, Inc.
- Ati
- Atif
- Atip
- Atkore Inc.
- Atkr
- Atlantic American Corporation
- Atlas Corp.
- Atlas Crest Investment Corp.
- Atlas Lithium Corporation
- Atlassian Corporation Plc
- Atlc
- Atlo
- Atlx
- Atmc
- Atmcu
- Atmos Energy Corporation
- Atmu
- Atmus Filtration Technologies Inc.
- Atmv
- Atmvu
- Atnf
- Atni
- Atnm
- Ato
- Atom
- Atomera Incorporated
- Atos
- Atossa Therapeutics, Inc.
- Atpc
- Atr
- Atra
- Atrc
- Atri
- AtriCure, Inc.
- Atrion Corporation
- Atro
- Atsg
- Atus
- Atxi
- Atxs
- Atyr
- Aub
- Aubn
- Auburn National Bancorporation, Inc.
- AudioEye, Inc.
- Augmedix, Inc.
- Augx
- Auid
- Aumn
- Auph
- Aur
- Aura
- Aura Biosciences, Inc.
- Aurinia Pharmaceuticals Inc.
- AuthID Inc.
- Autl
- AutoNation, Inc.
- AutoZone, Inc.
- Autodesk, Inc.
- Autolus Therapeutics plc
- Automatic Data Processing, Inc.
- Auud
- Ava
- Avadel Pharmaceuticals plc
- Avah
- AvalonBay Communities, Inc.
- Avalon Holdings Corporation
- Avangrid, Inc.
- Avanos Medical, Inc.
- Avav
- Avb
- Avbp
- Avd
- Avdl
- Avdx
- Aveanna Healthcare Holdings Inc.
- Avenue Therapeutics, Inc.
- Avenview Inc.
- Avery Dennison Corporation
- Avgo
- Avgr
- Aviat Networks, Inc.
- AvidXchange Holdings, Inc.
- Avidity Biosciences, Inc.
- Avient Corporation
- Avinger, Inc.
- Avir
- Avis Budget Group, Inc.
- Avista Corporation
- Avita Medical, Inc.
- Avnet, Inc.
- Avns
- Avnw
- Avo
- Avpt
- Avro
- Avt
- Avte
- Avtr
- Avtx
- Avxl
- Avy
- Aware, Inc.
- Awh
- Awi
- Awk
- Awr
- Awre
- Awx
- Ax
- Axalta Coating Systems Ltd.
- Axcelis Technologies, Inc.
- Axdx
- Axgn
- Axil
- Axl
- Axnx
- Axogen, Inc.
- Axon
- Axon Enterprise, Inc.
- Axonics, Inc.
- Axonics Modulation Technologies, Inc.
- Axp
- Axr
- Axs
- Axsm
- Axsome Therapeutics, Inc.
- Axta
- Axti
- Ayi
- Ayro
- Aytu
- Aytu BioPharma, Inc.
- Azek
- Azenta, Inc.
- Azitra Inc.
- Azo
- Azpn
- Azta
- Aztr
- Azz
- B
- B&G Foods, Inc.
- B&G 푸즈
- B&G 푸즈 (B&G Foods, Inc., BGS)
- BA
- BACK
- BACK (BACK, BACK)
- BAER
- BAER (BAER, BAER)
- BAFN
- BAH
- BALL
- BALY
- BANC
- BANC (BANC, BANC)
- BAND
- BANF
- BANF (BANF, BANF)
- BANR
- BARK
- BARK (BARK, BARK)
- BASE
- BATL
- BATL (BATL, BATL)
- BATRA
- BATRA (BATRA, BATRA)
- BATRK
- BATRK (BATRK, BATRK)
- BAX
- BAYA
- BAYAU
- BAYAU (BAYAU, BAYAU)
- BAYA (BAYA, BAYA)
- BB
- BBAI
- BBAI (BBAI, BBAI)
- BBCP
- BBCP (BBCP, BBCP)
- BBDC
- BBDC (BBDC, BBDC)
- BBGI
- BBIO
- BBLG
- BBLG (BBLG, BBLG)
- BBSI
- BBW
- BBWI
- BBY
- BC
- BCAB
- BCAL
- BCBP
- BCB Bancorp, Inc.
- BCC
- BCDA
- BCDA (BCDA, BCDA)
- BCG
- BCG (BCG, BCG)
- BCLI
- BCML
- BCO
- BCOV
- BCOW
- BCO (BCO, BCO)
- BCPC
- BCRX
- BCSA
- BCSAU
- BCSAU (BCSAU, BCSAU)
- BCSA (BCSA, BCSA)
- BCSF
- BCSF (BCSF, BCSF)
- BCTX
- BCTX (BCTX, BCTX)
- BCYC
- BC (BC, BC)
- BDC
- BDC (BDC, BDC)
- BDL
- BDN
- BDN (BDN, BDN)
- BDSX
- BDTX
- BDX
- BDX (BDX, BDX)
- BE
- BEAM
- BEAT
- BEAT (BEAT, BEAT)
- BECN
- BEEM
- BEEM (BEEM, BEEM)
- BEEP
- BELFA
- BELFA (BELFA, BELFA)
- BELFB
- BELFB (BELFB, BELFB)
- BEN
- BERY
- BETR
- BETR (BETR, BETR)
- BFAC
- BFAC (BFAC, BFAC)
- BFAM
- BFC
- BFH
- BFIN
- BFLY
- BFLY (BFLY, BFLY)
- BFRG
- BFRG (BFRG, BFRG)
- BFRI
- BFRI (BFRI, BFRI)
- BFS
- BFST
- BFS (BFS, BFS)
- BG
- BGC
- BGC (BGC, BGC)
- BGFV
- BGLC
- BGNE
- BGS
- BGSF
- BGSF, Inc.
- BGSF (BGSF, Inc., BGSF)
- BGXX
- BH
- BHB
- BHC
- BHE
- BHF