Example 1. On July 1, 1957, A owned 75 percent, and AW, his wife, owned 25 percent, of the outstanding stock of the M Corporation. The M Corporation in turn owned 80 percent of the outstanding stock of the O Corporation. Under section 267(c)(1), A and AW are each considered as owning an amount of the O Corporation stock actually owned by M Corporation in proportion to their respective ownership of M Corporation stock. Therefore, A constructively owns 60 percent (75 percent of 80 percent) of the O Corporation stock and AW constructively owns 20 percent (25 percent of 80 percent) of such stock. Under the family ownership rule of section 267(c)(2), an individual is considered as constructively owning the stock actually owned by his spouse. A and AW, therefore, are each considered as constructively owning the M Corporation stock actually owned by the other. For the purpose of applying this family ownership rule, A's and AW's constructive ownership of O Corporation stock is considered as actual ownership under section 267(c)(5). Thus, A constructively owns the 20 percent of the O Corporation stock constructively owned by AW, and AW constructively owns the 60 percent of the O Corporation stock constructively owned by A. In addition, the family ownership rule may be applied to make AWF, AW's father, the constructive owner of the 25 percent of the M Corporation stock actually owned by AW. As noted above, AW's constructive ownership of 20 percent of the O Corporation stock is considered as actual ownership for purposes of applying the family ownership rule, and AWF is thereby considered the constructive owner of this stock also. However, AW's constructive ownership of the stock constructively and actually owned by A may not be considered as actual ownership for the purpose of again applying the family ownership rule to make AWF the constructive owner of these shares. The ownership of the stock in the M and O Corporations may be tabulated as follows:

Assuming that the M Corporation and the O Corporation make their income tax returns for calendar years, and that there was no distribution in liquidation of the M or O Corporation, and further assuming that other corporation was a personal holding company under section 542 for the calendar year 1956, no deduction is allowable with respect to losses from sales or exchanges of property made on July 1, 1957, between the two corporations. Moreover, whether or not either corporation was a personal holding company, no loss would be allowable on a sale or exchange between A or AW and either corporation. A deduction would be allowed, however, for a loss sustained in an arm's length sale or exchange between A and AWF, and between AWF and the M or O Corporation.

Example 2. On June 15, 1957, all of the stock of the N Corporation was owned in equal proportions by A and his partner, AP. Except in the case of distributions in liquidation by the N Corporation, no deduction is allowable with respect to losses from sales or exchanges of property made on June 15, 1957, between A and the N Corporation or AP and the N Corporation since each partner is considered as owning the stock owned by the other; therefore, each is considered as owning more than 50 percent in value of the outstanding stock of the N Corporation.

Example 3. On June 7, 1957, A owned no stock in X Corporation, but his wife, AW, owned 20 percent in value of the outstanding stock of X, and A's partner, AP, owned 60 percent in value of the outstanding stock of X. The partnership firm of A and AP owned no stock in X Corporation. The ownership of AW's stock is attributed to A, but not that of AP since A does not own any X Corporation stock either actually, or constructively under section 267(c)(1). A's constructive ownership of AW's stock is not the ownership required for the attribution of AP's stock. Therefore, deductions for losses from sales or exchanges of property made on June 7, 1957, between X Corporation and A or AW are allowable since neither person owned more than 50 percent in value of the outstanding stock of X, but deductions for losses from sales or exchanges between X Corporation and AP would not be allowable by section 267(a) (except for distributions in liquidation of X Corporation).