SHAREHOLDERS' EQUITY

12 Months Ended

Dec. 31, 2020

Basic and diluted income (loss) per share was determined based on the following share data (in thousands):


	Year Ended December 31,
	2020	2019	2018
Weighted average basic common shares	13,007	12,834	12,504
Effect of stock options	—	747	1,043
Effect of dilutive share awards	—	167	153
Effect of Convertible Senior Notes and warrants	—	871	397
Weighted average diluted common shares	13,007	14,619	14,097

For the year ended December 31, 2020, the Company had a loss from continuing operations and, as a result, no potentially dilutive securities were included in the denominator for computing diluted loss per share, because the impact would have been anti-dilutive. Accordingly, the weighted average basic shares outstanding was used to compute loss per share. Approximately 1.1 million shares related to potentially dilutive securities were excluded from the calculation of diluted loss per share for the year ended December 31, 2020 because their inclusion would have been anti-dilutive. For the year ended December 31, 2020, the weighted average shares that were anti-dilutive included options to purchase 0.2 million shares of common stock.

For the years ended December 31, 2019 and 2018, the weighted average shares that were anti-dilutive, and therefore excluded from the calculation of diluted income per share, included options to purchase 0.1 million and 0.4 million shares of common stock, respectively.

The convertible notes and the warrants issued by the Company could be converted into the Company’s common stock, subject to certain contingencies. See Note 15—Debt for additional information. Shares of the Company's common stock associated with the 0.50% Convertible Senior Notes due July 15, 2025 and the warrants issued by the Company in 2020 were excluded from the calculation of diluted loss per share for the year ended December 31, 2020 as they were anti-dilutive since the conversion price of the notes and the strike price of the warrants were greater than the average market price of the Company’s common stock during the relevant period.

See Note 13—Stock-Based Compensation for a full description of outstanding equity awards.

Common Stock Repurchases

In each of February 2018 and February 2019, the board of directors authorized and the Company announced the repurchase of up to $100.0 million and $150.0 million, respectively, of LendingTree's common stock. During the years ended December 31, 2019 and 2018, the Company purchased 22,731 and 379,449 shares, respectively, of its common stock for aggregate consideration of $5.5 million and $92.6 million, respectively. At December 31, 2020, $179.7 million remains authorized for share repurchase.