ProShares Trust II (YCS)

YCS is a fund that bets crude oil prices will fall. It does this by holding oil futures contracts — the kind that expire in the next few weeks or months — and arranging them so the fund goes up when oil goes down. Instead of buying oil directly, which you cannot do as a regular investor, YCS uses financial contracts that work like a seesaw: one end is oil prices, the other end is your potential gain or loss.

What makes YCS different from other inverse oil funds

Oil futures come in many versions. Some expire six months from now, some expire three months out, some expire in weeks. The contracts closest to today — the ones that will be settled in the next month or two — trade with different prices and move differently than contracts far in the future. YCS is designed to track the near-term oil contracts specifically. This means YCS focuses on the closest, most-traded futures, the ones that reflect what people think oil will cost very soon.

This matters because the gap between near-term and far-out futures creates real differences in how the funds move. Far-out futures can tell you what professional traders expect oil to cost a year from now, accounting for storage, interest rates, and expected supply and demand far ahead. Near-term futures are more reactive to today’s news — supply disruptions, sudden demand shocks, inventory reports from the government. YCS bounces with the short-term market; it is not a quiet, slow measure of long-term trends.

How it works on a daily basis

Every day, the fund checks how much near-term crude futures moved. If they fell three percent, the fund is designed to gain about three percent. If they rose two percent, the fund is designed to lose about two percent. Then at the end of each day, the fund rebalances — it sells some positions, buys others, adjusts the whole portfolio so that tomorrow it will deliver the opposite of whatever happens tomorrow.

This daily rebalancing is important. It means the fund is always resetting its bets. If oil falls hard one day and falls hard again the next day, YCS should climb both days and end up significantly higher. But if oil falls hard one day and climbs back up the next day, returning to about where it started, YCS will not be flat — it will have made money the first day and lost less than it gained, ending up slightly ahead. Or sometimes behind. The exact outcome depends on the specific numbers, and you cannot predict it without math.

The rolling contract problem

Oil futures expire. The contracts YCS holds today will stop trading in a few weeks and become worthless. So the fund continuously sells the old contracts and buys the new ones — this is called rolling. Every time the fund rolls, it pays a cost (the difference between what it sells the old contract for and what it pays for the new contract). Most of the time, near-term oil is cheaper than far-out oil — a pattern called contango. When the fund rolls, it is buying higher and selling lower, which costs money.

When oil futures are in backwardation — meaning near-term oil costs more than far-out oil — the rolling process works in the fund’s favor. But contango is the normal state. This structural cost accumulates and hurts the fund’s returns over time. It is not the fund manager’s fault; it is built into how oil markets work.

What could break this fund

The biggest risk is volatility. If oil swings wildly — dropping hard one day, surging the next — the fund loses money faster than you would expect from the price movement alone. Quiet, steady markets are kind to inverse funds; chaotic markets work against them. An investor holding YCS during an especially turbulent period might watch the fund’s price fall even though oil prices fell overall.

The second risk is time. The longer you hold YCS, the more costs accumulate: expense ratios, rolling costs, and the daily rebalancing slippage. Holding YCS for a few days makes sense for a quick tactical bet. Holding it for months or years almost always underperforms what simple math would suggest.

How to think about YCS as an investment

YCS is a tool for short-term traders. If you think oil will fall in the next week, YCS gives you a simple way to profit without opening a futures account. If you want to hedge oil price risk for a short period — say, you own airline stocks and expect oil to spike, so you buy YCS as insurance — it works clearly for that.

Holding YCS for longer periods requires understanding contango, volatility decay, and expense ratios. Check the fund’s prospectus and historical performance data (SEC CIK 0001415311) to see exactly how it has performed versus simple inverse oil prices over different time periods. If you held it for one month, what happened? One quarter? You will see the decay effect in action. Track near-term crude oil prices yourself using data from the U.S. Energy Information Administration or commodity market websites, and compare them to YCS’s actual returns. The gap is the cost of using the fund. If that gap seems acceptable for your time horizon and goal, YCS is a reasonable tool. If you are thinking of holding it for years, consider that you are almost certainly going to lose to simple math because of how these daily-reset inverse funds work.