| 2.25% | % of Shares Held by All Insider |
| 90.04% | % of Shares Held by Institutions |
| 92.11% | % of Float Held by Institutions |
| 687 | Number of Institutions Holding Shares |
| Holder | Shares | Date Reported | % Out | Value |
|---|---|---|---|---|
| Berkshire Hathaway, Inc | 38,565,570 | Sep 29, 2018 | 23.11% | 2,762,451,779 |
| Vanguard Group, Inc. (The) | 13,368,601 | Sep 29, 2018 | 8.01% | 957,592,889 |
| Blackrock Inc. | 9,650,618 | Sep 29, 2018 | 5.78% | 691,273,767 |
| State Street Corporation | 6,147,757 | Sep 29, 2018 | 3.68% | 440,363,833 |
| Norges Bank Investment Management | 4,388,919 | Dec 30, 2017 | 2.63% | 317,099,397 |
| Oppenheimer Funds, Inc. | 4,263,038 | Sep 29, 2018 | 2.55% | 305,361,411 |
| Dimensional Fund Advisors LP | 2,571,314 | Sep 29, 2018 | 1.54% | 184,183,221 |
| Bank Of New York Mellon Corporation | 2,272,055 | Sep 29, 2018 | 1.36% | 162,747,299 |
| Times Square Capital Management, LLC | 2,093,000 | Sep 29, 2018 | 1.25% | 149,921,590 |
| FMR, LLC | 1,943,730 | Sep 29, 2018 | 1.16% | 139,229,379 |
| Holder | Shares | Date Reported | % Out | Value |
|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 3,218,864 | Sep 29, 2018 | 1.93% | 230,567,228 |
| Vanguard Mid-Cap Index Fund | 2,936,696 | Sep 29, 2018 | 1.76% | 210,355,534 |
| Vanguard 500 Index Fund | 2,361,588 | Sep 29, 2018 | 1.41% | 169,160,548 |
| Oppenheimer Main Street Fund | 1,458,810 | May 30, 2018 | 0.87% | 97,506,860 |
| SPDR S&P 500 ETF Trust | 1,439,630 | Sep 29, 2018 | 0.86% | 103,120,696 |
| Vanguard Institutional Index Fund-Institutional Index Fund | 1,348,250 | Jun 29, 2018 | 0.81% | 93,622,480 |
| JNL Series Trust-JNL/S&P Intrinsic Value Fund | 1,201,000 | Jun 29, 2018 | 0.72% | 83,397,440 |
| DFA U.S. Large Cap Value Series | 1,127,259 | Jul 30, 2018 | 0.68% | 79,223,762 |
| Blackrock Funds-Health Sciences Opportunity Portfolio | 998,959 | Jun 29, 2018 | 0.60% | 69,367,712 |
| Fidelity Balanced Fund | 905,700 | Oct 30, 2018 | 0.54% | 60,989,838 |