Therefore, the money that he wins is considered theft. People literally gamble as to the price of a particular commodity or stock, and the person who has a holding of this particular item certainly does not want the price to deteriorate. Dear Lee and family, Stocks are a legitimate investment. Buying stocks is essentially no different than buying diamonds, land, or wheat. Gambling, on the other hand, is a game where each person hopes to guess the right number on the dice, or pick the right horse.
Gamblers are invalid as witnesses in a Jewish court.
The Sages of the Talmud differ as to why gamblers are invalid. His integrity is suspect, because he spends his day in pursuits which contribute nothing to society. According to this opinion, someone who gambles only part-time can be a valid witness, provided he's involved in some productive activity. The Chafetz Chaim answered that he gives blessings to stock investors because if the stock goes up, no one loses money. The Jewish attorneys comprising the group are based in Columbia, South Carolina.