WhaleCo acquired all of the common stock of MinnowCo early in year 1 for $900,000, and MinnowCo immediately elected to join WhaleCo's consolidated...

WhaleCo acquired all of the common stock of MinnowCo early in year 1 for $900,000, and MinnowCo immediately elected to join WhaleCo's consolidated Federal income tax return. As part of the takeover, WhaleCo also acquired $300,000 of MinnowCo bonds. The results of MinnowCo for the first few years of the group operations were reported as follows.

Tax Year                    Operating Gain/Loss                    Stock Basis

1                                      $ 100,000

2                                        (800,000)

3                                        (600,000)

Determine WhaleCo's basis in its MinnowCo common stock as of the end of each tax year.