The Pacific Northwest (PNW), sometimes referred to as Cascadia, is a geographic region in western North America bounded by the Pacific Ocean to the west and (loosely) by the Cascade Mountain Range on the east.
Mean time between failures (MTBF) describes the expected time between two failures for a repairable system, while mean time to failure (MTTF) denotes the expected time to failure for a non-repairable system. the MTBF is the sum of the operational periods divided by the number of observed failures.
The following table lists the top 100 largest exchange-traded funds, ranked by assets under management (AUM). The AUM of an ETF is calculated by multiplying shares outstanding by the market price per share. An ETFâs assets will fluctuate based on both changes in the value of the underlying securities and the creation of new shares or redemption of existing shares. It is worth noting that there may be a difference between an ETFâs market capitalization and the net asset value (NAV) of its underlying securities.