FORM N-Q

ITEM 1. SCHEDULE OF INVESTMENTS.

At September 30, 2008, the cost of investments for federal income tax purposes was $2,315,261,439. The tax basis gross unrealized appreciation and depreciation of portfolio securities were $36,426,888 and $721,448,637, respectively. Net unrealized depreciation was $685,021,749.

ADR — American Depositary Receipts.

Security Valuation — Securities traded on an exchange are valued at the last sales price on the primary exchange or market on which they are traded. Securities not listed on an exchange or security market, or securities for which there is no last sales price, are valued at the mean of the most recent bid and asked prices or are valued by J. & W. Seligman & Co. Incorporated (the “Manager”) based on quotations provided by primary market makers in such securities. Securities for which market quotations are not readily available (or are otherwise no longer valid or reliable) are valued at fair value determined in accordance with procedures approved by the Board of Directors. This can occur in the event of, among other things, natural disasters, acts of terrorism, market disruptions, intra-day trading halts, and extreme market volatility. The determination of fair value involves subjective judgments. As a result, using fair value to price a security may result in a price materially different from the prices used by other investment companies to determine net asset value or the price that may be realized upon the actual sale of the security. Short-term holdings maturing in 60 days or less are valued at current market quotations or amortized cost if the Manager believes it approximates fair value. Short-term holdings that mature in more than 60 days are valued at current market quotations until the 60th day prior to maturity and are then valued as described above for securities maturing in 60 days or less.

Fair Value Measurements — On January 1, 2008, the Corporation adopted Statement of Financial Accounting Standards No. 157 (“SFAS 157”), “Fair Value Measurements.” SFAS 157 establishes a three-tier hierarchy to classify the assumptions, referred to as inputs, used in valuation techniques (see Security Valuation above) to measure fair value of the Corporation’s investments. These inputs are summarized in three broad levels: Level 1 – quoted prices in active markets for identical investments; Level 2 – other significant observable inputs (including quoted prices in inactive markets or for similar investments); and Level 3 – significant unobservable inputs (including the Corporation’s own assumptions in determining fair value). The inputs or methodology used for valuing securities may not be an indication of the risk associated with investing in those securities.

The following is a summary of the value of the Corporation’s investments as of September 30, 2008 based on the level of inputs used:

As required by SFAS 157, the following is a reconciliation of investments for which significant unobservable inputs (Level 3) were used to determine the fair value of investments classified as Level 3 at either the beginning or end of the period:

Risk — To the extent that the Corporation invests a substantial percentage of its assets in an industry, the Corporation’s performance may be negatively affected if that industry falls out of favor. Stocks of large-capitalization companies have at times experienced periods of volatility and negative performance. During such periods, the value of such stocks may decline and the Corporation’s performance may be negatively affected.

Subsequent Events — On November 7, 2008, RiverSource Investments, LLC (“RiverSource Investments”), a wholly owned subsidiary of Ameriprise Financial, Inc., announced the closing of its acquisition (the “Acquisition”) of the Manager. With the Acquisition completed and stockholders of the Corporation having previously approved (at a Special Meeting held on October 7, 2008) a new investment management services agreement between the Corporation and RiverSource Investments, RiverSource Investments is the new investment manager of the Corporation effective November 7, 2008.

On November 12, 2008, the Corporation announced an offer to repurchase up to approximately 35% of its issued and outstanding shares of common stock (“Common Stock”) in exchange for a pro rata portion of the Corporation’s portfolio securities (subject to certain exceptions) and cash (or cash equivalents) at a price equal to 99.25% of the net asset value per share of Common Stock as of the close of the regular trading session of the New York Stock Exchange on the trading day immediately after the day the repurchase offer expires.

The offer commenced on November 12, 2008 and will expire at 5:00 p.m., Eastern time, on December 11, 2008 (unless extended). The offer is being made upon the terms and subject to the conditions set forth in the Offer to Repurchase, which was mailed on November 14, 2008 to holders of Common Stock of the Corporation on November 10, 2008.