How Can I Find Out The Total Value Of Commodity Exchange Traded Funds (ETF)?
Commodity ETFs, in spite of their name, generally do not invest in commodities. They invest in future contracts on commodities (aka commodity futures). When they invest, they explicitly specify that they do not expect the delivery of the physical commodity at contract expiration, but rather, expect to receive its cash value. This “cash delivery” market at any given time is substantially bigger (often many times over) than the “physical delivery” market. Cornering, conversely, is something that happens in the “physical delivery” market. People who try to corner the market generally build up substantial positions in physical commodities. So your concern about ETFs and cornering is unjustified, as ETFs play no role in the “physical delivery” market.