EARNINGS (LOSS) PER SHARE

The following table summarizes the reconciliation of the numerators and denominators for the basic and diluted earnings (loss) per share computation for the periods indicated:



	Three months ended February 28,						Nine months ended February 28,
	2019			2018			2019			2018
Net income (loss) attributable to Class A and Common Shares	$	(12.6	)	$	(49.2	)	$	(2.3	)	$	(55.8	)
Weighted average Shares of Class A Stock and Common Stock outstanding for basic earnings (loss) per share (in millions)	35.3			34.9			35.2			35.1
Dilutive effect of Class A Stock and Common Stock potentially issuable pursuant to stock-based compensation plans (in millions) *	—			—			—			—
Adjusted weighted average Shares of Class A Stock and Common Stock outstanding for diluted earnings (loss) per share (in millions)	35.3			34.9			35.2			35.1
Earnings (loss) per share of Class A Stock and Common Stock:
Basic	$	(0.36	)	$	(1.41	)	$	(0.07	)	$	(1.59	)
Diluted	$	(0.36	)	$	(1.41	)	$	(0.07	)	$	(1.59	)

* The Company experienced a Net loss for all periods presented and therefore did not report any dilutive share impact.

The following table sets forth options outstanding pursuant to stock-based compensation plans as of the dates indicated:



	February 28, 2019	February 28, 2018
Options outstanding pursuant to stock-based compensation plans (in millions)	2.9	3.1

There were 0.7 million of potentially anti-dilutive shares pursuant to stock-based compensation plans as of February 28, 2019.

A portion of the Company’s Restricted Stock Units ("RSUs") which are granted to employees participate in earnings through cumulative dividends which are payable and non-forfeitable to the employees upon vesting of the RSUs. Accordingly, the Company measures earnings per share based upon the lower of the Two-class method or the Treasury Stock method.

For the three and nine month periods ended February 28, 2019 and February 28, 2018, the Company experienced a Net loss and did not allocate any losses to the participating RSUs.

As of February 28, 2019, $59.4 remained available for future purchases of common shares under the repurchase authorization of the Board of Directors (the "Board") in effect on that date. See Note 11, Treasury Stock, for a more complete description of the Company’s share buy-back program.