| SC 13G/A | 2021-02-11 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | NASDAQ, INC. | 13,809,174 | 8.4% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | NASDAQ, INC. | 14,397,962 | 8.8% | EDGAR |
| SC 13D/A | 2020-04-24 | INVESTOR AB | NASDAQ, INC. | 19,394,142 | 11.8% | EDGAR |
| SC 13G/A | 2020-02-14 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | NASDAQ, INC. | 13,823,742 | 8.4% | EDGAR |
| SC 13G/A | 2020-02-12 | VANGUARD GROUP INC | NASDAQ, INC. | 12,839,409 | 7.8% | EDGAR |
| SC 13G/A | 2019-02-13 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | NASDAQ, INC. | 14,022,762 | 8.6% | EDGAR |
| SC 13G/A | 2019-02-11 | VANGUARD GROUP INC | NASDAQ, INC. | 12,264,474 | 7.5% | EDGAR |
| SC 13G/A | 2018-04-06 | BlackRock Inc. | NASDAQ, INC. | 8,093,053 | 4.9% | EDGAR |
| SC 13G/A | 2018-02-09 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | NASDAQ, INC. | 14,235,200 | 8.6% | EDGAR |
| SC 13G/A | 2018-02-09 | VANGUARD GROUP INC | NASDAQ, INC. | 11,825,546 | 7.1% | EDGAR |
| SC 13G/A | 2018-01-23 | BlackRock Inc. | NASDAQ, INC. | 9,043,188 | 5.4% | EDGAR |
| SC 13G/A | 2017-02-13 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | NASDAQ, INC. | 15,249,243 | 9.2% | EDGAR |
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | NASDAQ, INC. | 10,845,585 | 6.6% | EDGAR |
| SC 13G/A | 2017-01-25 | BlackRock Inc. | NASDAQ, INC. | 9,302,849 | 5.6% | EDGAR |
| SC 13G/A | 2016-02-11 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | NASDAQ, INC. | 15,450,971 | 9.4% | EDGAR |
| SC 13G/A | 2016-02-10 | BlackRock Inc. | NASDAQ, INC. | 12,077,563 | 7.4% | EDGAR |
| SC 13G/A | 2016-02-10 | VANGUARD GROUP INC | NASDAQ, INC. | 9,887,005 | 6.0% | EDGAR |
| SC 13G/A | 2015-02-13 | FMR LLC | NASDAQ OMX GROUP, INC. | 5,005,040 | 3.0% | EDGAR |
| SC 13G | 2015-02-11 | VANGUARD GROUP INC | NASDAQ OMX GROUP, INC. | 8,673,284 | 5.2% | EDGAR |
| SC 13G/A | 2015-02-09 | BlackRock Inc. | NASDAQ OMX GROUP, INC. | 11,499,834 | 6.9% | EDGAR |