| BlackRock Institutional Trust Company, N.A. |
5,191,874 |
14.56 |
470,806 |
12/31/20 |
| The Vanguard Group, Inc. |
2,778,483 |
7.79 |
10,356 |
12/31/20 |
| Dimensional Fund Advisors, L.P. |
2,501,333 |
7.02 |
-13,372 |
12/31/20 |
| Encompass Capital Advisors, LLC |
1,868,637 |
5.24 |
-102,363 |
12/31/20 |
| State Street Global Advisors (US) |
1,570,896 |
4.41 |
18,928 |
12/31/20 |
| Private Management Group, Inc. |
1,458,951 |
4.09 |
-34,274 |
12/31/20 |
| D. E. Shaw & Co., L.P. |
1,294,322 |
3.63 |
-175,998 |
12/31/20 |
| BNP Paribas Asset Management UK Limited |
1,226,200 |
3.44 |
1,226,200 |
1/31/21 |
| Mangrove Partners |
1,082,120 |
3.04 |
-1,035,369 |
12/31/20 |
| Rubric Capital Management LP |
1,056,330 |
2.96 |
-336,489 |
12/31/20 |
| Nuveen LLC |
940,720 |
2.64 |
-77,836 |
12/31/20 |
| Renaissance Technologies LLC |
939,043 |
2.63 |
54,643 |
12/31/20 |
| Charles Schwab Investment Management, Inc. |
796,743 |
2.23 |
5,386 |
12/31/20 |
| Jacobs Levy Equity Management, Inc. |
772,169 |
2.17 |
-115,311 |
12/31/20 |
| Millennium Management LLC |
734,980 |
2.06 |
499,073 |
12/31/20 |
| Wellington Management Company, LLP |
721,024 |
2.02 |
20,186 |
12/31/20 |
| HN Saltoro Capital, LP |
653,916 |
1.83 |
653,916 |
12/31/20 |
| Northern Trust Investments, Inc. |
643,214 |
1.80 |
-19,703 |
12/31/20 |
| Becker (Todd A) |
602,849 |
1.69 |
58,254 |
2/19/21 |
| Invesco Capital Management LLC |
516,168 |
1.45 |
57,489 |
12/31/20 |
| Geode Capital Management, L.L.C. |
511,967 |
1.44 |
-2,657 |
12/31/20 |
| JP Morgan Asset Management |
498,428 |
1.40 |
26,621 |
12/31/20 |
| Goldman Sachs Asset Management (US) |
481,366 |
1.35 |
-81,678 |
12/31/20 |
| Morgan Stanley & Co. LLC |
473,318 |
1.33 |
348,186 |
12/31/20 |
| Treuer (Alain) |
338,649 |
0.95 |
17,531 |
5/8/20 |
| Norges Bank Investment Management (NBIM) |
304,200 |
0.70 |
304,200 |
12/31/20 |
| Deutsche Asset Management Americas |
276,594 |
0.78 |
218,574 |
12/31/20 |
| Northern Trust Global Investments |
274,679 |
0.77 |
-1,533 |
12/31/20 |
| Mellon Investments Corporation |
269,798 |
0.76 |
17,472 |
12/31/20 |
| Arrowstreet Capital, Limited Partnership |
258,827 |
0.73 |
-283,922 |
12/31/20 |
| Columbia Threadneedle Investments (US) |
252,989 |
0.71 |
-3,119 |
12/31/20 |
| AllianceBernstein L.P. |
240,957 |
0.68 |
-42,107 |
12/31/20 |
| Moore Capital Management, LP |
238,260 |
0.67 |
-5,270 |
12/31/20 |
| Cooper Creek Partners Management LLC |
235,306 |
0.66 |
-- |
12/31/20 |
| Principal Global Investors (Equity) |
230,580 |
0.65 |
-9,140 |
12/31/20 |
| Bridgeway Capital Management, LLC |
211,650 |
0.59 |
-- |
12/31/20 |
| BlackRock Financial Management, Inc. |
210,360 |
0.59 |
2,405 |
12/31/20 |
| Citadel Advisors LLC |
207,620 |
0.58 |
-32,202 |
12/31/20 |
| Hoovestol (Wayne B) |
188,431 |
0.53 |
17,531 |
5/8/20 |
| Portolan Capital Management, L.L.C. |
181,684 |
0.51 |
-111,617 |
12/31/20 |
| Simpkins (G Patrich Jr) |
179,573 |
0.50 |
25,778 |
2/19/21 |
| BlackRock Investment Management, LLC |
160,472 |
0.45 |
-3,719 |
12/31/20 |
| Hightower Advisors, LLC |
156,753 |
0.44 |
-65,604 |
12/31/20 |
| Fuller & Thaler Asset Management Inc. |
150,350 |
0.42 |
-7,905 |
12/31/20 |
| BNP Paribas Asset Management USA, Inc. |
142,589 |
0.40 |
142,589 |
9/30/19 |
| Hotchkis and Wiley Capital Management, LLC |
137,170 |
0.38 |
136,320 |
12/31/20 |
| Marshall Wace LLP |
134,281 |
0.38 |
-155,133 |
12/31/20 |
| Connor, Clark & Lunn Investment Management Ltd. |
133,251 |
0.37 |
-9,368 |
12/31/20 |
| Goldman Sachs Asset Management International |
132,506 |
0.37 |
-- |
12/31/20 |
| Rhumbline Advisers Ltd. Partnership |
120,578 |
0.34 |
8,766 |
12/31/20 |