EDGAR Filing Documents for 0001193125-12-182483

Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:

SEC Accession No. 0001193125-12-182483

Filing Date

2012-04-25

Accepted

2012-04-25 17:25:25

Documents

Effectiveness Date

2012-04-25

Document Format Files

Seq	Description	Document	Type	Size
1	DEFINITIVE ADDITIONAL MATERIALS	d340575ddefa14a.htm	DEFA14A	22105
2	GRAPHIC	g3405752.jpg	GRAPHIC	177765
3	GRAPHIC	g3405753.jpg	GRAPHIC	122681
4	GRAPHIC	g3405754.jpg	GRAPHIC	61519
5	GRAPHIC	g340575img1.jpg	GRAPHIC	132463
	Complete submission text file	0001193125-12-182483.txt		704952

Mailing Address 140 BROADWAY 42ND FLOOR NEW YORK NY 10005

Business Address 140 BROADWAY 42ND FLOOR NEW YORK NY 10005 212-831-6000

MARKETAXESS HOLDINGS INC (Filer) CIK: 0001278021 (see all company filings)

IRS No.: 522230784 | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 001-34091 | Film No.: 12780575
SIC: 6211 Security Brokers, Dealers & Flotation Companies