Stock Institutional Ownership and Shareholders

SecurityQTM / Quantum Corp. (747906204)
President and CEOGACEK JON W
Institutional Owners99
Institutional Shares22,063,180
Outstanding Shares34,084,000 (as of 2017-06-30)
Institutional Value$ 112,443,000 USD
Related 747906AG0 / Quantum Corp. Bond
747906AJ4 / Quantum Corp. Bond 4.5% Due 11/15/2017

Quantum Corp. (NYSE:QTM) has 99 institutional investors and shareholders that have filed 13D/G or 13F forms with the Securities Exchange Commission (SEC). These institutions hold a total of 22,063,180 shares. Largest shareholders include VIEX Capital Advisors, LLC, Park West Asset Management LLC, BlackRock Inc., Vanguard Group Inc, Wells Fargo & Company/mn, Renaissance Technologies LLC, Alta Fundamental Advisers LLC, Starboard Value LP, Neuberger Berman Group LLC, and Pacific Ridge Capital Partners, LLC.



Quantum Corp. (NYSE:QTM) ownership summary shows current positions in the company by institutions and funds, as well as latest changes in position size. Major shareholders can include individual investors, mutual funds, hedge funds, or institutions. The Schedule 13D indicates that the investor holds more than 5% of the company and intends to actively pursue a change in business strategy. Schedule 13G indicates a passive investment of over 5%. Green rows indicate new positions. Red rows indicate closed positions. Click the link icon to see the full transaction history.

File DateFormInvestor Opt Prev Shares Current Shares Change
(Percent)
Prev Value (x$1000) Current Value (x$1000) Change
(Percent)
2017-11-14 13F-HR PEAK6 Investments, L.P. 0 7,089 0 43
2017-11-13 13F-HR Pacific Ridge Capital Partners, LLC 619,333 674,673 8.94 4,837 4,129 -14.64
2017-10-23 13F-HR Nationwide Fund Advisors 88,243 88,243 0.00 689 540 -21.63
2017-11-20 SC 13G Park West Asset Management LLC 2,000,000
2017-11-15 13F-HR GROUP ONE TRADING, L.P. 4,842 6,042 24.78 38 37 -2.63
2017-11-14 13F-HR GOLDMAN SACHS GROUP INC Put 0 1,700 0 10
2017-11-07 13F-HR AMERIPRISE FINANCIAL INC 106,057 106,015 -0.04 828 649 -21.62
2018-01-10 13F-HR SIMPLEX TRADING, LLC 29,323 22,356 -23.76 179 125 -30.17
2017-11-20 13F-HR GSA CAPITAL PARTNERS LLP 95,417 121,017 26.83 745 741 -0.54
2017-11-06 13F-HR SEI INVESTMENTS CO 0 3,328 0 20
2017-11-13 13F-HR Renaissance Technologies LLC 1,059,641 1,067,471 0.74 8,276 6,533 -21.06
2017-11-15 13F-HR/A-1 Alta Fundamental Advisers LLC 477,182 1,009,334 111.52 3,727 6,177 65.74
2017-11-14 13F-HR VANGUARD GROUP INC 1,239,375 1,190,277 -3.96 9,680 7,284 -24.75
2017-11-13 13F-HR FEDERATED INVESTORS INC /PA/ 694 1,335 92.36 5 8 60.00
2017-11-14 13F-HR Voya Investment Management LLC 12,969 12,969 0.00 101 79 -21.78
2017-11-14 13F-HR Lyon Street Capital, LLC 309,660 0 -100.00 2,418 0 -100.00
2017-10-25 13F-HR FIRST QUADRANT L P/CA 9,855 60
2017-11-13 13F-HR FMR LLC / Fidelity 638,843 436,970 -31.60 4,989 2,674 -46.40
2017-11-06 13F-HR NEW YORK STATE COMMON RETIREMENT FUND 29,800 29,800 0.00 233 182 -21.89
2018-01-17 13F-HR SCHWAB CHARLES INVESTMENT MANAGEMENT INC 123,003 128,307 4.31 753 723 -3.98
2017-11-06 13F-HR Bank of New York Mellon Corp 149,683 146,125 -2.38 1,169 894 -23.52
2017-11-14 13F-HR PDT Partners, LLC 84,800 115,431 36.12 662 706 6.65
2017-08-08 13F-HR PARK CIRCLE Co 100,000 0 -100.00 87 0 -100.00
2017-11-14 13F-HR Walleye Trading LLC 19,216 118
2017-11-17 13F-HR/A-1 Virtu Financial LLC 12,449 76
2017-08-14 13F-HR TWO SIGMA INVESTMENTS LLC 128,933 0 -100.00 112 0 -100.00
2017-11-14 13F-HR SUSQUEHANNA INTERNATIONAL GROUP, LLP Put 32,900 14,400 -56.23 257 88 -65.76
2017-11-13 SC 13D/A VIEX Capital Advisors, LLC 29,531,722 3,691,464 -87.50
2017-11-15 13F-HR Highlander Capital Management, LLC 0 25 0 0
2017-11-14 13F-HR MANUFACTURERS LIFE INSURANCE COMPANY, THE 24,348 18,364 -24.58 190 112 -41.05
2017-11-14 13F-HR BANK OF AMERICA CORP /DE/ 67,141 73,510 9.49 524 450 -14.12
2017-11-14 13F-HR BOOTHBAY FUND MANAGEMENT, LLC 26,103 30,350 16.27 204 186 -8.82
2017-11-09 13F-HR WELLS FARGO & COMPANY/MN 1,353,440 1,084,566 -19.87 10,571 6,637 -37.22
2017-11-13 13F-HR Royce & Associates LLC 13,003 18,003 38.45 102 110 7.84
2017-11-01 13F-HR AMERICAN CENTURY COMPANIES INC 90,426 553
2017-11-14 13F-HR AQR CAPITAL MANAGEMENT LLC 43,721 267,085 510.88 341 1,635 379.47
2017-11-14 13F-HR SUSQUEHANNA INTERNATIONAL GROUP, LLP Call 20,100 42,900 113.43 157 263 67.52
2017-11-13 13F-HR COOPER CREEK PARTNERS MANAGEMENT LLC 471,682 459,228 -2.64 3,684 2,810 -23.72
2017-10-26 13F-HR Integrated Investment Consultants, LLC 62 62 0.00 0 0
2017-11-15 13F-HR WOLVERINE TRADING, LLC Put 19,000 13,800 -27.37 148 84 -43.24
2017-11-06 13F-HR Advisor Group, Inc. 632 632 0.00 5 4 -20.00
2017-11-14 13F-HR JACOBS LEVY EQUITY MANAGEMENT, INC 83,394 72,794 -12.71 651 445 -31.64
2017-08-14 13F-HR COMPTON CAPITAL MANAGEMENT INC /RI 20,000 0 -100.00 17 0 -100.00
2017-11-03 13F-HR BESSEMER GROUP INC 3,640 0 -100.00 28 0 -100.00
2017-07-18 13F-HR White Pine Investment CO 56,800 0 -100.00 49 0 -100.00
2017-11-14 13F-HR CREDIT SUISSE AG/ 0 19,524 0 120
2017-12-14 13F-HR/A-1 PARAMETRIC PORTFOLIO ASSOCIATES LLC 13,686 32,982 140.99 107 202 88.79
2017-11-13 13F-HR KING LUTHER CAPITAL MANAGEMENT CORP 30,750 30,750 0.00 240 188 -21.67
2017-12-01 13F-HR/A-1 Axa 162,200 168,739 4.03 1,267 1,033 -18.47
2017-11-14 13F-HR D. E. Shaw & Co., Inc. 257,122 258,455 0.52 2,008 1,582 -21.22
2017-11-15 13F-HR WOLVERINE TRADING, LLC 18,427 26,891 45.93 143 165 15.38
2017-11-14 13F-HR Northern Right Capital Management, L.P. 550,286 0 -100.00 4,298 0 -100.00
2017-11-09 SC 13D/A Private Capital Management, LLC
2017-10-23 13F-HR STRS OHIO 14,500 14,500 0.00 113 88 -22.12
2017-10-20 13F-HR MEEDER ASSET MANAGEMENT INC 901 6
2017-11-16 13F-HR ALGERT GLOBAL LLC 240,527 260,456 8.29 1,879 1,594 -15.17
2017-08-08 13F-HR Cambridge Investment Research Advisors, Inc. 30,800 0 -100.00 27 0 -100.00
2017-11-14 13F-HR Fondren Management LP 103,375 50,000 -51.63 807 306 -62.08
2017-12-05 13F-HR Perigon Wealth Management, LLC 3 0
2017-11-14 13F-HR MORGAN STANLEY 170,793 213,067 24.75 1,334 1,304 -2.25
2017-10-30 13F-HR TOCQUEVILLE ASSET MANAGEMENT L.P. 266,256 1,629
2017-11-14 13F-HR ROYAL BANK OF CANADA 3,941 7,416 88.18 30 45 50.00
2017-11-13 13F-HR NORTHERN TRUST CORP 317,303 316,980 -0.10 2,478 1,940 -21.71
2017-10-17 13F-HR Creative Planning 62 0 -100.00 0 0
2017-11-14 13F-HR BALYASNY ASSET MANAGEMENT LLC 0 20,900 0 128
2017-11-14 13F-HR SOROS FUND MANAGEMENT LLC 686,666 0 -100.00 5,363 0 -100.00
2017-11-15 13F-HR EII CAPITAL MANAGEMENT, INC. 185,337 142,497 -23.11 1,447 872 -39.74
2017-11-14 13F-HR TWO SIGMA ADVISERS, LP 112,055 72,662 -35.16 875 445 -49.14
2018-01-10 13F-HR SIMPLEX TRADING, LLC Call 260 130 -50.00 3 0 -100.00
2017-11-14 13F-HR UBS Group AG 675 3,297 388.44 5 20 300.00
2017-11-14 13F-HR GEODE CAPITAL MANAGEMENT, LLC 250,444 242,640 -3.12 1,955 1,484 -24.09
2017-10-30 13F-HR IFP Advisors, Inc 10 10 0.00 0 0
2017-11-08 13F-HR MACQUARIE GROUP LTD 14,328 88
2017-11-14 13F-HR ELLINGTON MANAGEMENT GROUP LLC 32,700 0 -100.00 255 0 -100.00
2017-11-14 13F-HR PRICE T ROWE ASSOCIATES INC /MD/ 12,428 12,428 0.00 97 76 -21.65
2017-11-13 13F-HR CITIGROUP INC 11,996 15,153 26.32 94 93 -1.06
2017-11-03 13F-HR BNP PARIBAS ARBITRAGE, SA 2,933 2,933 0.00 22,907 17,950 -21.64
2017-08-07 13F-HR USCA RIA LLC 42,100 0 -100.00 37 0 -100.00
2017-11-13 13F-HR S Squared Technology, LLC 290,065 290,064 -0.00 2,265 1,775 -21.63
2017-11-15 13F-HR CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 83,162 83,162 0.00 649 509 -21.57
2017-11-14 13F-HR BRIDGEWAY CAPITAL MANAGEMENT INC 31,250 208,650 567.68 244 1,277 423.36
2017-11-14 13F-HR D'Orazio & Associates, Inc. 5,000 5,000 0.00 1 0 -100.00
2017-11-15 13F-HR Neuberger Berman Group LLC 719,277 756,445 5.17 5,618 4,629 -17.60
2017-11-13 13F-HR CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 49,600 45,402 -8.46 387 278 -28.17
2017-08-10 13F-HR FNY Partners Fund LP 10,000 0 -100.00 69 0 -100.00
2017-11-13 13F-HR OXFORD ASSET MANAGEMENT 79,110 62,982 -20.39 618 389 -37.06
2017-11-14 13F-HR MILLENNIUM MANAGEMENT LLC 17,674 0 -100.00 138 0 -100.00
2017-11-14 13F-HR DEUTSCHE BANK AG\ 92,906 53,524 -42.39 724 326 -54.97
2017-11-13 13F-HR FRANKLIN RESOURCES INC 24,264 25,859 6.57 190 159 -16.32
2017-07-31 13F-HR Nine Chapters Capital Management LLC 157,600 0 -100.00 137 0 -100.00
2017-11-14 13F-HR MENTA CAPITAL LLC 50,892 311
2017-11-14 13F-HR BlackRock Inc. 1,991,117 1,954,651 -1.83 15,551 11,962 -23.08
2017-11-08 13F-HR FULLER & THALER ASSET MANAGEMENT, INC. 328,321 518,721 57.99 2,564 3,175 23.83
2017-11-15 13F-HR GROUP ONE TRADING, L.P. Call 5,500 2,200 -60.00 43 13 -69.77
2017-11-14 13F-HR BARCLAYS PLC 1,934 960 -50.36 15 6 -60.00
2017-11-14 13F-HR GOLDMAN SACHS GROUP INC Call 1,500 2,000 33.33 12 12 0.00
2017-11-15 13F-HR WOLVERINE TRADING, LLC Call 27,100 23,000 -15.13 211 141 -33.18
2017-11-07 13F-HR Russell Investments Group, Ltd. 100,727 95,121 -5.57 787 582 -26.05
2017-11-14 13F-HR SPRINGBOK CAPITAL MANAGEMENT, LLC 1,400 0 -100.00 11 0 -100.00
2017-11-14 13F-HR PEAK6 Investments, L.P. Call 2,500 1,500 -40.00 20 9 -55.00
2017-11-14 13F-HR Tower Research Capital LLC (TRC) 698 6,800 874.21 1 41 4,000.00
2017-11-15 13F-HR LADENBURG THALMANN FINANCIAL SERVICES INC 1,912 1,662 -13.08 16 10 -37.50
2017-11-14 13F-HR PEAK6 Investments, L.P. Put 8,100 19,800 144.44 63 121 92.06
2017-11-14 13F-HR Squarepoint Ops LLC 20,780 0 -100.00 162 0 -100.00
2017-11-13 13F-HR DIMENSIONAL FUND ADVISORS LP 0 200,829 0 1,229
2017-11-09 13F-HR Legal & General Group Plc 4,161 4,161 0.00 32 25 -21.87
2017-07-26 13F-HR CORTLAND ASSOCIATES INC/MO 20,309 0 -100.00 18 0 -100.00
2017-11-15 SC 13D/A Starboard Value LP 29,241,259 957,067 -96.73
2017-11-14 13F-HR Jefferies Group LLC 10,000 61
2017-08-14 13F-HR Gotham Asset Management, LLC 34,993 0 -100.00 30 0 -100.00
2017-11-14 13F-HR Invesco Ltd. 0 53,230 0 326
2017-11-08 13F-HR BRONFMAN E.L. ROTHSCHILD, L.P. 291 7,791 2,577.32 2 48 2,300.00
2017-11-14 13F-HR GLENMEDE TRUST CO NA 970 0 -100.00 0 0
2017-08-11 13F-HR MISSION WEALTH MANAGEMENT, LLC 18,035 0 -100.00 16 0 -100.00
2017-11-14 13F-HR ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 272,829 84,191 -69.14 2,131 515 -75.83
2018-01-11 13F-HR First PREMIER Bank 62 0
2017-11-13 13F-HR TEACHERS ADVISORS INC 50,076 50,076 0.00 391 306 -21.74
2017-11-14 13F-HR AMP Capital Investors Ltd 19,748 0 -100.00 153 0 -100.00
2017-11-15 13F-HR Ameritas Investment Partners, Inc. 2,457 2,457 0.00 19 13 -31.58
2017-11-09 13F-HR CITADEL ADVISORS LLC 63,904 19,384 -69.67 499 119 -76.15
2017-11-03 13F-HR Sterling Investment Advisors, Ltd. 56,000 56,000 0.00 6 4 -33.33
2017-11-09 13F-HR AMERICAN INTERNATIONAL GROUP INC 17,363 18,766 8.08 136 115 -15.44
2017-11-06 13F-HR RHUMBLINE ADVISERS 30,282 30,939 2.17 237 189 -20.25
2017-11-14 13F-HR ZACKS INVESTMENT MANAGEMENT 189,930 1,162
2017-08-14 13F-HR Breithorn Capital Management 3,763,749 368,167 -90.22 3,274 2,875 -12.19
2017-11-14 13F-HR Cubist Systematic Strategies, LLC 31,068 31,335 0.86 243 192 -20.99
2017-08-09 13F-HR Bienville Capital Management, LLC 32,460 0 -100.00 28 0 -100.00
2017-11-14 13F-HR CORNERSTONE CAPITAL MANAGEMENT HOLDINGS LLC. 35,900 0 -100.00 280 0 -100.00
2017-11-14 13F-HR GOLDMAN SACHS GROUP INC 88,137 79,902 -9.34 688 489 -28.92
2017-08-14 13F-HR BOKF, NA 37,350 0 -100.00 32 0 -100.00
2017-11-14 13F-HR JANE STREET GROUP, LLC 0 23,957 0 147
2017-08-03 13F-HR GABELLI FUNDS LLC 65,000 0 -100.00 57 0 -100.00
2017-11-13 13F-HR TIAA CREF INVESTMENT MANAGEMENT LLC 96,037 76,273 -20.58 750 467 -37.73
2017-08-11 13F-HR KCG HOLDINGS, INC. 111,006 0 -100.00 97 0 -100.00
2017-07-25 13F-HR ACADIAN ASSET MANAGEMENT LLC 387,178 0 -100.00 337 0 -100.00
2017-11-14 13F-HR STATE STREET CORP 316,327 371,527 17.45 2,473 2,275 -8.01
2017-08-14 13F-HR TUDOR INVESTMENT CORP ET AL 44,403 0 -100.00 39 0
2017-11-14 13F-HR Bluefin Trading, LLC 21,633 58,662 171.17 169 359 112.43
2017-11-13 13F-HR Spark Investment Management LLC 200,800 0 -100.00 1,568 0 -100.00
CUSIP: 747906204