Mi Cartera: Dudas y sugerencias de mejora para gestionar tus carteras de inversion

Me llama la atención que la herramienta, al calcular la evolución de las rentabilidades, sólo ofrezca la comparación con los índices a partir de mayo del 2007.
Para carteras que se iniciaron anteriormente, sería muy interesante poderlas comparar con los índices durante todo el periodo.

Me podeis dar de alta estas 4???
18383M878, 18383M308, 18383M209, 41021P103,
Gracias

De momento, lo tenemos así, pero lo tendremos en mente para futuras actualizaciones.

Necesitaríamos los codigos isin eso son CUSIPs. Lo podemos intentar buscar, pero la verdad es que no los tenemos.

No tengo ni idea, se que es con el US por delante y la misma numeracion mas un numero al final pero no se me ocurre como sacarlo, lo tengo en renta 4 pero no sale nada.
http://www.claymore.com/etf/fund/DEF

Me gustaría saber las empresas menos endeudadas del continuo y del eurosotck.

He encontrado algo de información para transformar el CUSIP en ISIN:

ISIN Calculation Methodology

The procedure for calculating ISIN check digits is similar to the "Modulus 10 Double Add Double" technique used in CUSIPs. To calculate the check digit, first convert any letters to numbers by adding their ordinal position in the alphabet to 9, such that A = 10 and M = 22. Starting with the right most digit, every other digit is multiplied by two. (For CUSIP check digits, these two steps are reversed.) The resulting string of digits (numbers greater than 9 becoming two separate digits) are added up. Subtract this sum from the smallest number ending with zero that is greater than or equal to it: this gives the check digit which is also known as the ten's complement of the sum modulo 10. That is, the resulting sum, including the check-digit, is a multiple of 10.

ISINs are slowly being introduced worldwide. At present, trading, clearing and settlement systems in many countries have adopted ISINs as a secondary measure of identifying securities. Additionally, some of those countries, mainly in Europe, have moved to using ISINs as their primary means of identifying securities.

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
[edit] Examples

Examples
[edit] Apple Inc.

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.