| BlackRock Institutional Trust Company, N.A. |
13,724,707 |
6.44 |
-124,330 |
3/31/20 |
| The Vanguard Group, Inc. |
10,101,104 |
4.74 |
672,177 |
3/31/20 |
| Mann (Alfred E) |
9,284,558 |
4.36 |
365,558 |
3/16/20 |
| Fidelity Management & Research Company |
4,943,162 |
2.32 |
1,755,755 |
3/31/20 |
| State Street Global Advisors (US) |
3,408,790 |
1.60 |
-12,751 |
3/31/20 |
| Emerald Advisers LLC |
3,370,000 |
1.58 |
3,370,000 |
6/30/20 |
| Geode Capital Management, L.L.C. |
2,686,283 |
1.26 |
152,101 |
3/31/20 |
| Northern Trust Investments, Inc. |
2,052,000 |
0.96 |
25,694 |
3/31/20 |
| Charles Schwab Investment Management, Inc. |
1,192,509 |
0.56 |
31 |
3/31/20 |
| Nuveen LLC |
917,597 |
0.43 |
204,689 |
3/31/20 |
| Parkman Healthcare Partners LLC |
901,117 |
0.42 |
-524,185 |
3/31/20 |
| Susquehanna International Group, LLP |
879,634 |
0.41 |
328,442 |
3/31/20 |
| BlackRock Investment Management, LLC |
702,326 |
0.33 |
25,635 |
3/31/20 |
| Millennium Management LLC |
700,307 |
0.33 |
687,254 |
3/31/20 |
| D. E. Shaw & Co., L.P. |
697,109 |
0.33 |
-465,065 |
3/31/20 |
| DuPont Capital Management Corporation |
660,000 |
0.31 |
7,600 |
6/30/20 |
| BofA Global Research (US) |
553,271 |
0.26 |
515,610 |
3/31/20 |
| BNY Mellon Asset Management |
490,905 |
0.23 |
27,976 |
3/31/20 |
| 180 Wealth Advisors, L.L.C. |
477,983 |
0.22 |
42,162 |
6/30/20 |
| Morgan Stanley & Co. LLC |
471,765 |
0.22 |
-15,218 |
3/31/20 |
| BlackRock Financial Management, Inc. |
424,487 |
0.20 |
23,758 |
3/31/20 |
| Principal Funds, Inc. |
385,863 |
0.18 |
360,805 |
6/30/20 |
| Raymond James & Associates, Inc. |
352,125 |
0.17 |
7,358 |
6/30/20 |
| California Public Employees' Retirement System |
314,960 |
0.15 |
-- |
3/31/20 |
| California State Teachers Retirement System |
295,663 |
0.14 |
3,338 |
3/31/20 |
| State of Wisconsin Investment Board |
289,500 |
0.14 |
95,200 |
3/31/20 |
| Kresa (Kent) |
285,213 |
0.13 |
4,084 |
3/16/20 |
| Thomson (David B) |
272,559 |
0.13 |
-88,965 |
3/16/20 |
| Castagna (Michael E) |
271,142 |
0.13 |
5,000 |
7/31/20 |
| AllianceBernstein L.P. |
260,700 |
0.12 |
61,400 |
3/31/20 |
| Rhumbline Advisers Ltd. Partnership |
235,978 |
0.11 |
-- |
3/31/20 |
| Wells Fargo Bank, N.A. |
225,106 |
0.11 |
-13,663 |
3/31/20 |
| SEB Investment Management AB |
218,100 |
0.10 |
-- |
5/31/20 |
| New York State Common Retirement Fund |
194,500 |
0.08 |
73,600 |
6/30/20 |
| Morgan Stanley Smith Barney LLC |
188,385 |
0.09 |
15,279 |
3/31/20 |
| Bruce & Company, Inc. |
175,723 |
0.08 |
-1,200,000 |
3/31/20 |
| Kocinsky (Joseph) |
174,636 |
0.08 |
38,507 |
2/20/19 |
| Northern Trust Global Investments |
169,778 |
0.08 |
23,292 |
3/31/20 |
| Creative Planning, Inc. |
169,315 |
0.08 |
-500 |
6/30/20 |
| Assenagon Asset Management S.A. |
155,587 |
0.07 |
6,903 |
7/31/20 |
| Goldman Sachs & Company, Inc. |
150,281 |
0.07 |
-49,211 |
3/31/20 |
| AXA Rosenberg Investment Management LLC |
137,441 |
0.06 |
-11,405 |
6/30/20 |
| Commonwealth Financial Network |
136,377 |
0.06 |
11,428 |
3/31/20 |
| Beirne Wealth Consulting Services, LLC |
134,200 |
0.06 |
40,000 |
6/30/20 |
| Manulife Asset Management Limited |
124,730 |
0.06 |
9,965 |
3/31/20 |
| Wells Capital Management Inc. |
121,626 |
0.06 |
-8,614 |
3/31/20 |
| Citadel Advisors LLC |
118,987 |
0.06 |
62,381 |
3/31/20 |
| Consiglio (Ronald Joseph) |
117,889 |
0.06 |
-6,400 |
3/16/20 |
| SG Americas Securities, L.L.C. |
116,305 |
0.05 |
44,075 |
6/30/20 |
| Group One Trading, L.P. |
111,471 |
0.05 |
-218,639 |
3/31/20 |
