We derive testable implications of Kyle and Obizhaeva's (2016) notion of "bet invariance'' for the cross-section of trade-time volatilities. We jointly develop theoretical foundations of "no speculative arbitrage'' whose implications incorporate those of bet invariance. Our proposed test...

We argue that the CAPM may be a reasonable model for estimating the cost of capital for projects in spite of increasing empirical evidence in the literature against the CAPM based on stock returns. As McDonald and Siegel (1985) and Berk, Green and Naik (1999) point out, stocks are backed by...

We argue that the empirical evidence against the Capital Asset Pricing Model (CAPM) based on stock returns does not invalidate its use for estimating the cost of capital for projects in making capital budgeting decisions. Since stocks are backed not only by projects in place, but also the...