What is an Activist Investor?

Every investor that acquires 5% of a company is required to file a beneficial ownership filing, which is either a Form 13D or Form 13G, within ten (10) days of the event. If the investor intends to influence management, then they are considered an activist investor and must file a 13D. Carl Icahn is a well-known activist investor. If they do not intend to influence management, then they are considered a passive investor and must file a 13G. Vanguard, because of it's size, owns more than 5% of many companies. Since it is a passively managed fund, it files Forms 13G. If there is any change in the ownership, investors must make amendments to their original filings, with either forms 13D/A, or 13G/A. If a passive investor that has filed a 13G decides they want to influence management, they must file a new 13D that supercedes their original 13G.

There is evidence that suggests investing alongside activist investors is a stock market investing strategy that can produce excess returns. This free screener shows all of the required Schedule 13D filings made by activist investors.

Investor Groups

Additionally, filers of 13Ds often organize investor groups in order to have more leverage when influencing management. Fintel only identifies the lead investor of an investor group. To see the other members of the group, read the original filing by clicking on the form type in the Form column. You cannot directly compare shares reported in a 13D/G with shares reported by the investor in a 13F, since the 13D/G filings may include other investors.

Change in holdings is calculated as (current - previous) / previous. Click the link icon to see the full transaction history.

DateFormTargetLead Investor Market
Cap ($M)
Previous
Shares
SharesShares Change
(Percent)
Ownership
(Percent)
Ownership Change
(Percent)
2018‑07‑18 SC 13G IRDM / Iridium Communications Van Berkom & Associates Inc. 2,025 5,104,064 5,363,813 5.09 4.86 -6.72
2018‑07‑18 SC 13D MARK / Remark Media Tao Kai-Shing 134 6,618,134 10,200,634 54.13 26.0 -20.00
2018‑07‑18 SC 13D/A IMMR / Immersion Raging Capital Management, LLC 478 4,779,346 4,779,346 0.00 15.7 0.00
2018‑07‑18 SC 13G HMSY / HMS Holdings Van Berkom & Associates Inc. 2,015 4,701,470 3,835,219 -18.43 4.61 -18.69
2018‑07‑18 SC 13D/A ENLK / EnLink Midstream Partners DEVON ENERGY CORP/DE 5,278 183,189,051 0 -100.00 0.0 -100.00
2018‑07‑18 SC 13D/A ENLC / Enlink Midstream DEVON ENERGY CORP/DE 2,851 115,495,669 0 -100.00 0.0 -100.00
2018‑07‑18 SC 13G/A WSTI / WindStream Technologies Typenex Co-Investment, LLC 0 299,019,017 356,511,027 19.23 9.99 0.00
2018‑07‑18 SC 13G/A OPXS / Optex Systems Holdings LONGVIEW FUND LP 6 232,556 2.69 -83.82
2018‑07‑18 SC 13D/A HFC / HollyFrontier TCTC Holdings, LLC 12,125 12,605,755 7.1
2018‑07‑18 SC 13G RAIL / FreightCar America Russell Investments Group, Ltd. 210 1,346,326 685,996 -49.05 5.5 -49.07
2018‑07‑18 SC 13G OGEN / Oragenics Empery Asset Management, LP 5 520,000 9.99
2018‑07‑18 SC 13G GALE / Galena Biopharma Empery Asset Management, LP 2 1,275,000 9.99
2018‑07‑18 SC 13G FLDM / Fluidigm Russell Investments Group, Ltd. 253 2,250,881 5.8
2018‑07‑18 SC 13G JAX / J. Alexander's Holdings Russell Investments Group, Ltd. 168 836,044 5.7
2018‑07‑18 SC 13D/A MTSL / MER Telemanagement Solutions FRIEDMAN TZVIKA 185,703 115,703 -37.69 3.2 -46.22
2018‑07‑18 SC 13D/A PCOM / Points International BONANZA CAPITAL LTD 830,009 660,625 -20.41 4.58 -13.58
2018‑07‑17 SC 13D/A BRK.A / Berkshire Hathaway BUFFETT WARREN E 390,362,319 270,644 36.25
2018‑07‑17 SC 13G RDGL / Vivos Dona Greg 4,194,007 5.18
2018‑07‑17 SC 13D/A SSW / Seaspan FAIRFAX FINANCIAL HOLDINGS LTD/ CAN 39,139,560 64,139,560 63.87 32.2 11.81
2018‑07‑17 SC 13D/A CZICF / Canadian Zinc Resource Capital Fund VI L.P. 51,630,000 151,630,000 193.69 41.4 107.52
2018‑07‑17 SC 13D/A HRG / Harbinger Group LEUCADIA NATIONAL CORP 2,722 14.1 -38.96
2018‑07‑17 SC 13D/A ASYS / Amtech Systems Schreyer Leslie J 86 2,412,000 2,418,000 0.25 16.2 -1.22
2018‑07‑17 SC 13G DERM / Dermira INTEGRATED CORE STRATEGIES (US) LLC 484 2,119,829 5.1
2018‑07‑17 SC 13D/A WBA / Walgreens Boots Alliance Alliance Sante Participations S.A. 62,177 143,091,383 144,788,821 1.19 14.6 1.39
2018‑07‑17 SC 13D/A GLF / GulfMark Offshore Raging Capital Management, LLC 240 2,358,388 2,350,054 -0.35 30.7 -6.40
2018‑07‑17 SC 13D/A GLF / GulfMark Offshore Captain Q, Llc 240 1,168,816 1,177,150 0.71 16.4 -1.20
2018‑07‑17 SC 13D/A HLI / Houlihan Lokey ORIX HLHZ Holding LLC 1,579 32,689,520 32,752,706 0.19 49.5 0.20
2018‑07‑17 SC 13D CGC / Canopy Growth Greenstar Canada Investment Limited Partnership 28,315,352 13.5
2018‑07‑17 SC 13G/A BRGO / Bergio International Iliad Research & Trading, L.P. 0 5,482,605 484,719,535 8,741.04 9.99 0.00
2018‑07‑17 SC 13D/A CRVW / Careview Communications HealthCor Management, L.P. 24 88,180,924 33,030,112 -62.54 19.2 -50.52
2018‑07‑17 SC 13G CEIX / CONSOL Energy Azvalor Asset Management Sgiic Sa 1,144 2,818,621 10.0
2018‑07‑17 SC 13D/A HRG / Harbinger Group CF Turul LLC 2,722 32,994,740 5,320,562 -83.87 9.96 -39.27
2018‑07‑17 SC 13G/A MNKD / MannKind Flynn James E 238 0 2,279,154 1.91
2018‑07‑17 SC 13G MNKD / MannKind Flynn James E 238 0 14,576,376 9.985
2018‑07‑17 SC 13D/A TSRI / TSR HUGHES JOSEPH F 14 819,491 819,491 0.00 41.8 0.00
2018‑07‑17 SC 13D/A TSRI / TSR Hughes Winifred 14 819,491 819,491 0.00 41.8 0.00
2018‑07‑17 SC 13G/A FXNC / First National First National Corp Employee Stock Ownership Plan 69 247,283 230,846 -6.65 4.7 -6.00
2018‑07‑17 SC 13G SMAR / SMARTSHEET SMALLCAP WORLD FUND INC 2,564 2,156,403 15.9
2018‑07‑17 SC 13D/A TEO / Telecom Argentina S.A. Fintech Telecom, LLC 870,856,212 870,856,212 0.00 66.39 0.00
2018‑07‑17 SC 13G CIE / Cobalt International Energy Qin Hui 11 5,731,953 19.15
2018‑07‑17 SC 13G ZUO / ZUORA ALLEN PAUL G 453 2,867,445 14.0
2018‑07‑16 SC 13D/A CA / CA CAREAL HOLDING AG 18,356 103,836,580 103,813,380 -0.02 24.7 4.22
2018‑07‑16 SC 13D/A ETRM / EnteroMedics HealthCor Partners Management LP 349,139
2018‑07‑16 SC 13D ARCK / ARC Group Kasturi Seenu G. 7 3,344,707 1,534,950 -54.11 20.7 -57.30
2018‑07‑16 SC 13D/A GCO / Genesco Legion Partners Asset Management, LLC 827 1,030,234 1,030,234 0.00 5.17 0.00
2018‑07‑16 SC 13G EGLT / Egalet Cetus Capital Iii, L.p. 21 1,185,656 2.2
2018‑07‑16 SC 13G AQXP / Aquinox Pharmaceuticals EcoR1 Capital, LLC 62 1,758,973 7.5
2018‑07‑16 SC 13G SGMS / Scientific Games Park West Asset Management LLC 4,614 3,007,000 4,936,555 64.17 5.2 52.94
2018‑07‑16 SC 13G/A PRTS / U.S. Auto Parts Network Khazani Sol 50 2,539,671 6.73
2018‑07‑16 SC 13D/A LMB / Limbach Holdings 1347 Investors LLC 89 3,029,779 2,952,515 -2.55 36.3 -2.68