Table 5 IPO and mature companies investor clusters overlap

From: Clusters of investors around initial public offering

ISIN

IPO date

Year

FI0009000681

FI0009003727

FI0009000665

FI0009000277

FI0009002943

# Unique cl.

FI0009004881

1995-01-12

Y1

2 (2) {118}

1 (1) {17}

2 (2) {11}

{8}

3 (2) {11}

9/14 (64%)

  

Y2

9 (11) {142}

6 (8) {33}

7 (9) {34}

1 (1) {5}

6 (6) {57}

1/10 (10%)

FI0009800346

1995-05-11

Y1

21 (25) {146}

13 (12) {19}

12 (12) {20}

7 (7) {15}

16 (14) {29}

3/28 (11%)

  

Y2

26 (32) {133}

18 (16) {30}

23 (23) {46}

1 (1) {2}

15 (19) {67}

6/40 (15%)

FI0009800320

1995-05-11

Y1

5 (7) {146}

3 (3) {19}

2 (3) {20}

1 (2) {15}

4 (5) {29}

3/8 (38%)

  

Y2

10 (14) {133}

12 (14) {30}

7 (8) {46}

1 (1) {2}

11 (10) {67}

5/21 (24%)

FI0009005318

1995-06-01

Y1

3 (3) {152}

{21}

2 (3) {21}

2 (3) {15}

1 (1) {29}

2/5 (40%)

  

Y2

9 (10) {123}

7 (8) {34}

5 (6) {38}

1 (1) {3}

8 (9) {62}

1/13 (8%)

FI0009900336

1995-06-01

Y1

{152}

{21}

{21}

{15}

{29}

0

  

Y2

6 (8) {123}

6 (7) {34}

5 (8) {38}

{3}

6 (6) {62}

1/11 (9%)

FI0009800643

1995-09-04

Y1

5 (8) {176}

1 (2) {21}

2 (3) {27}

{10}

3 (3) {45}

0/5 (0%)

  

Y2

19 (31) {133}

17 (19) {38}

21 (22) {38}

1 (1) {2}

14 (15) {67}

6/32 (19%)

FI0009005870

1996-03-27

Y1

4 (4) {136}

2 (3) {32}

2 (2) {41}

1 (1) {2}

2 (3) {65}

1/6 (17%)

  

Y2

13 (15) {190}

6 (7) {26}

10 (9) {30}

1 (1) {4}

9 (10) {56}

0/14 (0%)

FI0009005987

1996-05-02

Y1

56 (54) {128}

23 (24) {30}

26 (24) {43}

{2}

33 (28) {72}

18/82 (22%)

  

Y2

82 (91) {225}

27 (22) {34}

40 (30) {33}

6 (4) {9}

43 (37) {58}

20/110 (18%)

FI0009005961

1996-05-02

Y1

21 (29) {128}

13 (18) {30}

19 (19) {43}

1 (1) {2}

19 (18) {72}

2/30 (7%)

  

Y2

51 (73) {225}

29 (26) {34}

36 (26) {33}

3 (3) {9}

31 (33) {58}

7/65 (11%)

FI0009005953

1996-05-02

Y1

11 (12) {128}

7 (8) {30}

9 (10) {43}

{2}

8 (9) {72}

2/14 (14%)

  

Y2

9 (10) {225}

4 (6) {34}

8 (7) {33}

1 (1) {9}

6 (8) {58}

0/10 (0%)

FI0009006381

1997-04-03

Y1

26 (34) {179}

5 (5) {27}

14 (13) {33}

2 (2) {4}

19 (18) {54}

4/32 (12%)

  

Y2

31 (40) {312}

13 (11) {25}

13 (15) {61}

19 (19) {80}

20 (28) {118}

2/38 (5%)

FI0009006415

1997-04-24

Y1

6 (8) {210}

3 (4) {32}

5 (6) {32}

{4}

8 (9) {56}

3/11 (27%)

  

Y2

4 (6) {333}

3 (3) {24}

2 (2) {54}

{90}

4 (4) {130}

0/5 (0%)

FI0009005805

1997-06-09

Y1

28 (44) {240}

16 (16) {35}

22 (19) {39}

8 (7) {14}

19 (22) {53}

4/39 (10%)

  

Y2

9 (13) {356}

3 (3) {29}

4 (7) {62}

5 (7) {93}

5 (9) {160}

2/12 (17%)

FI0009006589

1997-06-17

Y1

9 (14) {245}

7 (6) {39}

6 (7) {37}

4 (4) {14}

6 (11) {51}

2/11 (18%)

  

Y2

1 (1) {377}

{29}

{62}

{91}

{162}

0/1 (0%)

FI0009006621

1997-11-25

Y1

60 (81) {273}

23 (19) {27}

24 (20) {46}

31 (24) {43}

44 (39) {62}

3/66 (5%)

  

Y2

59 (123) {547}

26 (20) {27}

24 (21) {46}

50 (55) {90}

53 (101) {236}

2/63 (3%)

FI0009006738

1997-11-26

Y1

30 (46) {275}

11 (10) {28}

18 (16) {48}

16 (15) {45}

20 (21) {62}

3/38 (8%)

  

Y2

54 (107) {557}

12 (12) {27}

14 (14) {47}

43 (48) {97}

57 (86) {241}

5/71 (7%)

FI0009006696

1997-12-02

Y1

4 (5) {274}

1 (1) {28}

1 (1) {48}

2 (3) {46}

4 (5) {65}

0/5 (0%)

  

Y2

5 (8) {602}

3 (3) {25}

4 (4) {50}

3 (3) {88}

5 (9) {210}

0/5 (0%)

FI0009006761

1997-12-09

Y1

8 (14) {291}

6 (8) {26}

8 (10) {49}

7 (9) {45}

6 (8) {68}

0/8 (0%)

  

Y2

7 (15) {606}

6 (5) {25}

4 (4) {41}

6 (10) {90}

7 (18) {229}

0/7 (0%)

FI0009007017

1998-04-01

Y1

{316}

{28}

{62}

{81}

{117}

0

  

Y2

3 (4) {765}

2 (2) {32}

{44}

1 (1) {87}

3 (4) {232}

1/4 (25%)

FI0009007025

1998-04-01

Y1

7 (9) {316}

6 (6) {28}

5 (6) {62}

6 (6) {81}

6 (7) {117}

2/9 (22%)

  

Y2

15 (24) {765}

10 (11) {32}

10 (9) {44}

10 (16) {87}

14 (22) {232}

3/20 (15%)

FI0009007066

1998-04-30

Y1

6 (9) {326}

5 (7) {29}

4 (5) {56}

5 (8) {87}

6 (11) {142}

0/8 (0%)

  

Y2

3 (2) {836}

2 (1) {35}

2 (3) {42}

2 (2) {102}

2 (2) {223}

0/3 (0%)

FI0009006829

1998-06-01

Y1

4 (5) {341}

3 (3) {30}

2 (2) {60}

2 (2) {89}

1 (1) {153}

0/5 (0%)

  

Y2

9 (14) {906}

4 (4) {38}

7 (12) {46}

5 (6) {96}

7 (7) {210}

5/15 (33%)

FI0009007215

1998-08-03

Y1

6 (12) {437}

1 (2) {30}

5 (4) {57}

4 (6) {93}

6 (11) {179}

3/10 (30%)

  

Y2

15 (24) {615}

6 (6) {39}

5 (6) {45}

13 (14) {103}

11 (12) {185}

6/25 (24%)

FI0009007264

1998-09-15

Y1

94 (134) {469}

16 (13) {25}

15 (15) {48}

53 (45) {94}

75 (81) {204}

9/113 (8%)

  

Y2

376 (361) {587}

37 (31) {41}

32 (23) {41}

163 (105) {125}

237 (144) {200}

64/475 (13%)

FI0009007371

1998-11-17

Y1

248 (350) {515}

41 (24) {26}

49 (35) {45}

148 (83) {90}

206 (187) {233}

13/272 (5%)

  

Y2

683 (550) {645}

47 (31) {36}

49 (39) {48}

252 (108) {112}

300 (156) {183}

99/818 (12%)

FI0009007355

1998-12-04

Y1

1 (1) {612}

{26}

{47}

{91}

1 (1) {226}

0/1 (0%)

  

Y2

{611}

{33}

{44}

{115}

{175}

0

FI0009007132

1998-12-18

Y1

91 (153) {629}

26 (16) {24}

32 (23) {40}

67 (60) {87}

85 (125) {250}

9/111 (8%)

  

Y2

35 (45) {523}

18 (19) {33}

29 (25) {49}

31 (34) {112}

38 (58) {166}

4/54 (7%)

FI0009007629

1999-03-01

Y1

2 (3) {689}

1 (1) {33}

{41}

{81}

1 (1) {261}

0/2 (0%)

  

Y2

6 (7) {553}

3 (3) {34}

4 (4) {56}

8 (9) {97}

4 (4) {130}

3/12 (25%)

FI0009801286

1999-03-15

Y1

14 (23) {731}

6 (5) {33}

5 (5) {41}

10 (13) {81}

15 (28) {262}

0/15 (0%)

  

Y2

1 (1) {580}

1 (1) {32}

{54}

1 (1) {96}

1 (1) {124}

0/1 (0%)

FI0009007553

1999-03-23

Y1

65 (108) {745}

28 (19) {35}

20 (17) {48}

44 (44) {83}

61 (77) {242}

8/81 (10%)

  

Y2

65 (70) {551}

12 (10) {36}

14 (13) {52}

56 (48) {100}

42 (26) {128}

11/99 (11%)

FI0009007728

1999-04-06

Y1

36 (78) {811}

16 (20) {33}

8 (10) {46}

27 (32) {92}

36 (59) {230}

5/44 (11%)

  

Y2

21 (22) {530}

10 (11) {32}

10 (10) {53}

18 (22) {90}

11 (11) {125}

5/31 (16%)

FI0009007546

1999-04-19

Y1

1 (1) {850}

1 (1) {35}

1 (1) {46}

{100}

1 (1) {225}

0/1 (0%)

  

Y2

{447}

{29}

{53}

{84}

{124}

0

FI0009007694

1999-05-03

Y1

23 (43) {855}

11 (13) {37}

4 (6) {44}

18 (28) {99}

19 (29) {228}

4/27 (15%)

  

Y2

1 (2) {454}

1 (2) {34}

{51}

2 (3) {93}

{131}

0/2 (0%)

FI0009007686

1999-05-03

Y1

3 (7) {855}

{37}

{44}

3 (3) {99}

4 (7) {228}

1/5 (20%)

  

Y2

{454}

{34}

{51}

{93}

{131}

1/1 (100%)

FI0009006886

1999-06-08

Y1

6 (6) {898}

2 (2) {33}

3 (3) {47}

5 (6) {97}

8 (10) {210}

2/11 (18%)

  

Y2

2 (2) {433}

1 (1) {34}

1 (1) {53}

1 (1) {90}

1 (1) {130}

0/2 (0%)

FI0009007819

1999-06-28

Y1

122 (277) {859}

38 (23) {36}

29 (28) {47}

86 (63) {92}

98 (115) {203}

5/135 (4%)

  

Y2

101 (124) {513}

31 (20) {34}

35 (33) {51}

81 (67) {98}

63 (58) {123}

6/123 (5%)

FI0009007835

1999-07-01

Y1

35 (64) {791}

22 (22) {34}

16 (18) {48}

30 (38) {95}

30 (44) {186}

4/41 (10%)

  

Y2

30 (42) {596}

19 (17) {34}

16 (16) {51}

23 (31) {103}

18 (27) {124}

1/34 (3%)

FI0009007884

1999-07-01

Y1

104 (171) {791}

31 (23) {34}

27 (26) {48}

74 (57) {95}

82 (75) {186}

13/136 (10%)

  

Y2

82 (145) {596}

32 (24) {34}

36 (29) {51}

73 (73) {103}

57 (61) {124}

6/100 (6%)

FI0009008080

1999-10-01

Y1

9 (16) {597}

3 (4) {41}

2 (1) {42}

6 (7) {120}

7 (8) {197}

2/11 (18%)

  

Y2

9 (15) {775}

5 (7) {34}

5 (6) {53}

7 (10) {89}

7 (7) {111}

0/9 (0%)

FI0009007918

1999-10-27

Y1

81 (167) {631}

20 (21) {41}

16 (16) {47}

58 (64) {120}

58 (64) {192}

2/87 (2%)

  

Y2

67 (150) {763}

21 (22) {37}

29 (21) {51}

51 (61) {91}

33 (44) {101}

6/79 (8%)

FI0009801310

1999-11-09

Y1

136 (149) {630}

22 (18) {38}

20 (16) {50}

85 (58) {113}

69 (67) {195}

14/169 (8%)

  

Y2

183 (318) {765}

34 (21) {38}

35 (30) {45}

90 (67) {86}

93 (70) {108}

22/218 (10%)

FI0009008221

1999-12-13

Y1

280 (292) {536}

37 (23) {34}

39 (29) {46}

151 (91) {112}

146 (108) {171}

32/337 (9%)

  

Y2

215 (356) {843}

50 (27) {39}

52 (30) {42}

115 (74) {89}

78 (60) {104}

22/252 (9%)

FI0009902530

2000-01-31

Y1

46 (61) {489}

17 (22) {37}

21 (21) {55}

39 (49) {115}

29 (46) {158}

5/62 (8%)

  

Y2

55 (118) {915}

34 (29) {49}

37 (31) {46}

40 (47) {90}

20 (19) {83}

2/65 (3%)

FI0009008924

2000-05-24

Y1

10 (15) {439}

4 (4) {33}

3 (3) {58}

6 (7) {86}

7 (8) {130}

0/12 (0%)

  

Y2

1 (1) {856}

{61}

{47}

{80}

{70}

1/2 (50%)

FI0009008833

2000-05-24

Y1

{439}

{33}

1 (1) {58}

1 (2) {86}

{130}

1/2 (50%)

  

Y2

2 (2) {856}

2 (2) {61}

2 (3) {47}

2 (2) {80}

{70}

0/3 (0%)

FI0009009146

2000-07-04

Y1

18 (28) {586}

4 (4) {35}

7 (8) {54}

15 (19) {98}

13 (15) {123}

5/28 (18%)

  

Y2

1 (1) {849}

1 (1) {61}

1 (1) {46}

1 (1) {78}

{66}

0/1 (0%)

FI0009009054

2000-07-05

Y1

5 (8) {600}

2 (4) {35}

1 (1) {54}

4 (6) {102}

3 (3) {128}

1/8 (12%)

  

Y2

3 (4) {849}

3 (4) {60}

3 (4) {47}

2 (5) {78}

4 (4) {69}

0/8 (0%)

FI0009009633

2000-11-01

Y1

12 (16) {762}

3 (4) {37}

3 (4) {47}

6 (6) {92}

7 (6) {107}

5/19 (26%)

  

Y2

7 (9) {548}

2 (2) {64}

1 (1) {50}

4 (4) {93}

2 (2) {53}

5/14 (36%)

FI0009009567

2000-12-19

Y1

8 (9) {818}

5 (5) {40}

4 (2) {47}

8 (8) {93}

1 (1) {101}

3/12 (25%)

  

Y2

2 (4) {468}

4 (4) {58}

3 (3) {59}

5 (5) {101}

2 (2) {52}

0/8 (0%)

FI0009008270

2000-12-22

Y1

45 (68) {858}

16 (12) {39}

17 (11) {48}

23 (26) {91}

17 (18) {91}

5/53 (9%)

  

Y2

4 (4) {477}

5 (5) {59}

2 (3) {58}

6 (5) {95}

3 (3) {52}

2/12 (17%)

FI0009009674

2001-01-30

Y1

18 (36) {900}

19 (24) {47}

19 (25) {52}

19 (31) {91}

11 (11) {81}

1/24 (4%)

  

Y2

11 (24) {499}

11 (19) {58}

11 (22) {52}

12 (35) {105}

4 (6) {41}

1/13 (8%)

FI0009009377

2001-04-02

Y1

2 (2) {795}

2 (2) {54}

1 (1) {49}

2 (2) {88}

1 (2) {102}

2/5 (40%)

  

Y2

1 (1) {526}

{42}

2 (2) {53}

1 (1) {118}

{14}

3/6 (50%)

FI0009010219

2001-04-02

Y1

5 (11) {795}

4 (4) {54}

4 (5) {49}

5 (5) {88}

4 (6) {102}

1/8 (12%)

  

Y2

2 (2) {526}

1 (1) {42}

{53}

1 (1) {118}

{14}

2/5 (40%)

FI0009010862

2001-10-01

Y1

1 (1) {639}

5 (6) {62}

4 (5) {55}

3 (4) {101}

1 (1) {51}

0/5 (0%)

  

Y2

{164}

3 (3) {39}

5 (8) {67}

7 (8) {94}

{14}

2/10 (20%)

FI0009010854

2001-10-01

Y1

2 (2) {639}

2 (3) {62}

2 (2) {55}

2 (3) {101}

{51}

0/2 (0%)

  

Y2

3 (3) {164}

5 (5) {39}

12 (15) {67}

13 (20) {94}

{14}

0/14 (0%)

SE0000667925

2002-12-09

Y1

42 (44) {248}

18 (18) {47}

29 (27) {57}

57 (51) {91}

20 (18) {35}

33/120 (28%)

  

Y2

96 (125) {327}

52 (45) {58}

60 (49) {70}

66 (63) {86}

45 (37) {73}

11/129 (9%)

SE0000110165

2003-09-04

Y1

1 (1) {339}

{44}

2 (3) {66}

1 (1) {93}

1 (1) {77}

2/4 (50%)

  

Y2

{173}

{56}

{105}

{100}

{73}

0

FI0009012843

2004-10-18

Y1

23 (41) {187}

37 (42) {71}

34 (44) {107}

36 (53) {99}

20 (27) {71}

7/54 (13%)

  

Y2

41 (65) {438}

36 (42) {159}

42 (54) {133}

31 (33) {113}

6 (5) {25}

6/64 (9%)

FI0009013296

2005-04-21

Y1

153 (138) {211}

144 (87) {102}

76 (60) {95}

109 (65) {81}

31 (28) {63}

36/262 (14%)

  

Y2

237 (207) {273}

165 (134) {185}

106 (76) {107}

148 (89) {110}

34 (30) {60}

41/336 (12%)

FI0009013312

2005-06-01

Y1

19 (28) {323}

13 (14) {129}

18 (17) {107}

15 (13) {82}

9 (12) {68}

1/26 (4%)

  

Y2

6 (9) {266}

6 (7) {171}

7 (8) {95}

8 (10) {94}

5 (4) {50}

1/13 (8%)

FI0009013403

2005-06-01

Y1

75 (85) {323}

81 (75) {129}

39 (37) {107}

56 (45) {82}

22 (15) {68}

10/112 (9%)

  

Y2

64 (64) {266}

66 (80) {171}

34 (31) {95}

55 (49) {94}

7 (8) {50}

10/92 (11%)

FI0009013429

2005-06-01

Y1

88 (105) {323}

85 (77) {129}

51 (44) {107}

71 (54) {82}

21 (16) {68}

18/133 (14%)

  

Y2

61 (73) {266}

64 (69) {171}

25 (26) {95}

48 (39) {94}

9 (10) {50}

9/89 (10%)

FI0009010391

2006-03-17

Y1

21 (25) {243}

16 (17) {182}

22 (26) {108}

20 (21) {119}

12 (14) {68}

4/37 (11%)

  

Y2

22 (26) {370}

17 (19) {121}

28 (37) {118}

26 (34) {101}

9 (8) {36}

6/50 (12%)

FI0009013924

2006-03-17

Y1

19 (22) {243}

13 (12) {182}

17 (22) {108}

16 (17) {119}

5 (5) {68}

3/29 (10%)

  

Y2

4 (4) {370}

4 (4) {121}

2 (2) {118}

4 (3) {101}

1 (1) {36}

2/11 (18%)

FI0009013593

2006-04-21

Y1

10 (14) {268}

6 (7) {184}

5 (9) {102}

10 (14) {112}

2 (2) {60}

2/17 (12%)

  

Y2

{337}

{127}

{124}

{90}

{32}

0

FI0009014351

2006-07-03

Y1

28 (32) {263}

21 (24) {163}

25 (27) {93}

26 (25) {90}

6 (6) {50}

16/56 (29%)

  

Y2

3 (4) {336}

4 (4) {147}

5 (5) {142}

4 (4) {94}

{34}

0/6 (0%)

FI0009014344

2006-07-03

Y1

{263}

{163}

{93}

{90}

{50}

3/3 (100%)

  

Y2

{336}

{147}

{142}

{94}

{34}

0

FI0009012413

2007-04-10

Y1

4 (4) {360}

2 (3) {122}

9 (9) {122}

6 (4) {95}

3 (3) {38}

8/22 (36%)

  

Y2

6 (7) {315}

11 (13) {143}

9 (16) {161}

10 (13) {62}

{7}

6/22 (27%)

FI0009015309

2007-06-15

Y1

32 (37) {329}

26 (26) {139}

31 (35) {136}

34 (32) {92}

6 (5) {37}

12/64 (19%)

  

Y2

19 (26) {380}

23 (30) {211}

16 (24) {198}

14 (17) {67}

2 (2) {16}

2/29 (7%)

      

Median

Y1

11%

      

Y2

9%

      

Average

Y1

16%

      

Y2

13%

  1. The overlap is given as A (B) {C}, where A is the number of the overlapping clusters in IPO stock, (B) is the number of overlapping clusters in the mature stock, and {C} is the total number of clusters of a mature stock. A does not necessarily equal B because any cluster can be statistically similar to more than one cluster in another security. ‘# unique cl.’ is the total number of unique IPO investor clusters over the total number of clusters, where the percentage ratio is given in brackets (). Median and average percentage of the unique clusters over all IPO stocks are given in the bottom of the table
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