How many institutions held MKTX - MARKETAXESS HOLDINGS INC - Common Stock, $0.003 par value in Q1 2018?

318 institutional investors reported MKTX - MARKETAXESS HOLDINGS INC - Common Stock, $0.003 par value for Q1 2018. Use the holders table for investor-level position and value details.

MARKETAXESS HOLDINGS INC - Common Stock, $0.003 par value (MKTX)

Q: What does CUSIP 57060D108 represent in this 13F holders report?

CUSIP 57060D108 is the security identifier for MKTX - MARKETAXESS HOLDINGS INC - Common Stock, $0.003 par value used to aggregate holder disclosures.

CUSIP: 57060D108

Q1 2018 13F Holders as of 31 Mar 2018

Security type / class: Equity / Common Stock, $0.003 par value
Total 13F shares: 37,548,096
Total 13F value: $8,162,995,116
Share change: +645,460
Put/Call ratio: 183%
SEC-reported price per share: $217.44
Number of holders: 318
Value change: +$142,092,511
Number of buys: 153
Number of sells: 141
Shares outstanding: 35,578,748

Security key

57060D108

Report period

Q1 2018

Institutions

318

Top holders

MKTX full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 MARKETAXESS HOLDINGS INC SEC filings MARKETAXESS HOLDINGS INC company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 57060D108

Newer quarter: Q2 2026

Recent filing periods:

Q2 2026

Ownership snapshot

Top reported holders of MKTX - MARKETAXESS HOLDINGS INC - Common Stock, $0.003 par value (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

BAILLIE GIFFORD & CO

Disclosed value leader

BAILLIE GIFFORD & CO

Comparable rows

15/15

Latest evidence

31 Dec 2017

13F Lead comparable stake: 9.1% Showing 1-6 of 15 holder rows.

Quick read

BAILLIE GIFFORD & CO leads the comparable SEC ownership view at 9.1%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens BAILLIE GIFFORD & CO's linked filing trail.

Comparable ownership Top 5

BAILLIE GIFFORD & CO 9.1%

BlackRock Finance, Inc. 8.7%

VANGUARD GROUP INC 8.4%

PRICE T ROWE ASSOCIATES INC /MD/ 5.9%

Capital World Investors 4.7%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
BAILLIE GIFFORD & CO	13F Company 13F	9.1%	$653,055,000 3,236,958 shares	—	31 Dec 2017
BlackRock Finance, Inc.	13F Company 13F	8.7%	$626,279,000 3,104,233 shares	—	31 Dec 2017
VANGUARD GROUP INC	13F Company 13F	8.4%	$601,479,000 2,981,308 shares	—	31 Dec 2017
PRICE T ROWE ASSOCIATES INC /MD/	13F Company 13F	5.9%	$421,678,000 2,090,102 shares	—	31 Dec 2017
Capital World Investors	13F Company 13F	4.7%	$335,914,000 1,665,000 shares	—	31 Dec 2017
WELLS FARGO & COMPANY/MN	13F Company 13F	3.3%	$238,390,000 1,181,609 shares	—	31 Dec 2017

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2018

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

318

37,548,096

Rows available

318

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2018 vs Q1 2018 Across Filers

Q1 2018 holders

318

Q1 2018 holders

318

Holder diff

Investor	Q1 2018 Shares	Q1 2018 Shares	Share Diff	Share Chg %	Q1 2018 value	Q1 2018 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend