▁the ▁general ▁contract or . ▁The ▁house ▁had ▁been ▁used ▁by ▁the ▁Bau haus ▁movement ▁as ▁an ▁example ▁of ▁a ▁" Me ister haus ", ▁but ▁Naz i ▁per sec ution ▁of ▁the ▁Bau haus , ▁and ▁subsequent ▁neglect , ▁had ▁left ▁significant ▁damage . ▁The ▁house ▁was ▁re - open ed ▁on ▁ 4 ▁February ▁ 2 0 0 0 , ▁after ▁a ▁two - year ▁rest oration ▁programme . ▁It ▁forms ▁part ▁of ▁the ▁UN ES CO ▁Bau haus ▁World ▁Heritage ▁Site . ▁ ▁In ▁May ▁ 2 0 1 3 , ▁Ho cht ief ▁sold ▁its ▁air ports ▁division ▁to ▁Canada ' s ▁Public ▁S ector ▁P ension ▁In vest ment ▁Board ▁for ▁ 1 . 1 ▁billion ▁eu ros . ▁ ▁Str ucture ▁and ▁ownership ▁Ho cht ief ▁is ▁an ▁Akt ien gesellschaft , ▁roughly ▁equivalent ▁to ▁a ▁public ▁limited ▁company ▁in ▁the ▁United ▁Kingdom . ▁Its ▁shares ▁are ▁trad ed ▁on ▁all ▁the ▁German ▁stock ▁ex changes , ▁including ▁the ▁Frankfurt ▁Stock ▁Exchange ▁and ▁B ör se ▁München , ▁using ▁the ▁X etra ▁system . ▁Ho cht ief ▁is ▁a ▁component ▁of ▁the ▁MD AX ▁share ▁index . ▁The ▁major ▁share hold ers ▁are ▁Gru po ▁A CS ▁with ▁ 6 1 %, ▁and ▁Q atar ▁Hold ings ▁L LC , ▁with ▁more ▁than ▁ 1 0 %. ▁( This ▁makes ▁Ho cht ief ▁a ▁Gru po ▁A CS ▁subs idi ary .) ▁. ▁ ▁As ▁of ▁January ▁ 2 0 1 1 , ▁Ho cht ief ▁has