On Oct. 1, 2021, the beginning of the 4th quarter, Sooner Co. held $50 million of 10% bonds of Castor Corp., purchased on May 1, 2021 at face value and held as trading securities. The companys fiscal year ends on December 31. Listed below are transactions during the fourth quarter of 2021 relating to the company's investments.

Date	Transaction
Oct. 18	Purchased 2 million shares of Melton Corp. common stock for $66 million. The purchase does not give Sooner significant influence as Melton has a total of 44 million shares issued.
Oct. 31	Received semiannual interest of $2.5 million from the Castor Corp. bonds.
Nov. 1	Purchased 10% bonds of Hughes Corp. at their $48 million face value, to be held until they mature in 2031. Semiannual interest is payable April 30 and October 31.
Nov. 1	Sold the Castor Corp. bonds for $44 million. No unrealized gains and losses had been recorded on these bonds previously.
Dec. 1	Purchased 12% bonds of Phillips Corp. at their $40 million face value as available-for-sale securities. The bonds mature in 2031. Semiannual interest is payable May 31 and November 30.
Dec. 20	Purchased U.S. Treasury bonds for $6.3 million as trading securities, hoping to earn profits on short-term differences in prices.
Dec. 21	Purchased 4 million shares of Nelson Corp.'s 58 million shares of common stock for $58 million, planning to hold these shares indefinitely.
Dec. 23	Sold the Treasury bonds for $7.0 million.
Dec. 29	Received cash dividends of $7 million from the Melton Corp. shares of common stock.

Additionally, on December 31, 2021, the company recorded any necessary adjusting entries relating to changes in fair values of the investments. Specifically, as of December 31:

The fair value of the Hughes Corp. bond investment was $17.4 million

The fair value of the Phillips Corp. bond investment was $37.0 million

The market price of the Melton Corp. common stock was $32.00 per share

The market price of the Nelson Corp. common stock was $18.50 per share