▁did ▁not ▁eventually ▁gradu ate . ▁This ▁list ▁is ▁not ▁exhaust ive , ▁as ▁it ▁only ▁includes ▁notable ▁companies ▁ ▁of ▁which ▁the ▁found ing ▁and ▁development ▁history ▁is ▁well ▁recorded ▁by ▁reliable ▁sources . ▁In ▁particular , ▁subs idi aries ▁are ▁listed ▁with ▁their ▁own ers ▁in ▁parentheses . ▁ ▁M IT ▁is ▁one ▁of ▁the ▁leading ▁univers ities ▁world wide ▁in ▁attract ing ▁fund ing ▁for ▁start - up ▁companies , ▁and ▁its ▁al umn i ▁have ▁founded ▁numerous ▁companies . ▁According ▁to ▁P itch Book , ▁ ▁from ▁ 2 0 0 6 ▁to ▁ 2 0 1 7 , ▁M IT ▁produced ▁ 9 0 7 ▁company ▁found ers ▁as ▁al umn i ▁or ▁current ▁students , ▁creating ▁ 7 8 0 ▁companies , ▁third ▁most ▁among ▁all ▁univers ities ▁in ▁the ▁world . ▁In ▁addition , ▁according ▁to ▁a ▁report ▁of ▁M IT ▁Slo an ▁School ▁of ▁Management ▁in ▁ 2 0 1 5 , ▁some ▁ 3 0 , 0 0 0 ▁companies ▁founded ▁by ▁M IT ▁al umn i ▁were ▁active , ▁employ ing ▁ 4 . 6 ▁million ▁people ▁and ▁producing ▁annual ▁reven ues ▁of ▁$ 1 . 9 ▁tr ill ion , ▁roughly ▁equivalent ▁to ▁the ▁ 1 0 th - larg est ▁economy ▁in ▁the ▁world ▁( 2 0 1 4 ). ▁Appro xim ately ▁ 4 0 % ▁of ▁M IT ▁found ers ▁are ▁serial ▁entrepr ene urs , ▁starting ▁multiple ▁companies , ▁and ▁ 2 3 % ▁of ▁M IT ▁al