How to read ISIN?
ISIN code:BR AAA BBB CC
The two first characters (BR) identify the contry code.
The four characters (AAAA) are alphanumeric and identify the issuer.
The three characters (BBB) are alpha-numeric and identify the type of the asset, and it may have an automatic sequence in the second position (Sequence 1) and in the third position (Sequence
2) or may have no sequence.
The two characters (CC) are alphanumeric and identify the type, if it is stocks, or represent an automatic sequence to identify every security issuance, if it is related to other categories.
The last character (7) is the control digit
Example:
Variable Income
BRPETRACNPR6
BR = Brazil
PETR = Petróleo Brasileiro S/A PETROBRAS
ACN = Nominative Stocks
PR = Preferred
6 = Check digit/control digit
Eample: 1
Apple Inc: ISIN US0378331005, expanded from CUSIP 037833100 The main body of the ISIN is the original CUSIP, assigned in the 1970s. The country code "US" has been added on the front, and an additional check digit at the end. The country code indicates the country the issuer is Domiciled. The check digit is calculated in this way...
Convert any letters to numbers:
U = 30, S = 28. US037833100 -> 3028037833100.
Collect odd and even characters:
3028037833100 = (3, 2, 0, 7, 3, 1, 0), (0, 8, 3, 8, 3, 0)
Multiply the group containing the rightmost character (which is the FIRST group) by 2:
(6, 4, 0, 14, 6, 2, 0)
Add up the individual digits:
(6 + 4 + 0 + (1 + 4) + 6 + 2 + 0) + (0 + 8 + 3 + 8 + 3 + 0) = 45
Take the 10s modulus of the sum:
45 mod 10 = 5
Subtract from 10:
10 - 5 = 5
Take the 10s modulus of the result (this final step is important in the instance where the modulus of the sum is 0, as the resulting check digit would be 10).
5 mod 10 = 5
So the ISIN check digit is five.
Example:2
TREASURY CORP VICTORIA 5 3/4% 2005-2016: ISIN AU0000XVGZA3
Convert any letters to numbers:
A = 10, G = 16, U = 30, V = 31, X = 33, Z = 35. AU0000XVGZA -> 103000003331163510.
Collect odd and even characters:
103000003331163510 = (1, 3, 0, 0, 3, 3, 1, 3, 1), (0, 0, 0, 0, 3, 1, 6, 5, 0)
Multiply the group containing the rightmost character (which is the SECOND group) by 2:
(0, 0, 0, 0, 6, 2, 12, 10, 0)
Add up the individual digits:
(1 + 3 + 0 + 0 + 3 + 3 + 1 + 3 + 1) + (0 + 0 + 0 + 0 + 6 + 2 + (1 + 2) + (1 + 0) + 0) = 27
Take the 10s modulus of the sum:
27 mod 10 = 7
Subtract from 10:
10 - 7 = 3
Take the 10s modulus of the result (this final step is important in the instance where the modulus of the sum is 0, as the resulting check digit would be 10).
3 mod 10 = 3
So the ISIN check digit is three.
Conversion table for characters is :
A = 10
F = 15
K = 20
P = 25
U = 30
Z = 35
B = 11
G = 16
L = 21
Q = 26
V = 31
C = 12
H = 17
M = 22
R = 27
W = 32
D = 13
I = 18
N = 23
S = 28
X = 33
E = 14
J = 19
O = 24
T = 29
Y = 34
