Films such as "Arbitrage" and "Margin Call, " both financial thrillers distributed by Roadside Attractions and Lions Gate, had synchronous theatrical and VOD debuts.
Under more normal financial conditions, the willingness of banks to engage in the simple arbitrage noted above will tend to limit the gap between the federal-funds rate and the rate the Fed pays on reserves.
Now it's become an obsession of the financial industry, to serve the needs of high-speed automated trading, where computers arbitrage based on knowing the market news an extra millisecond in advance.