COHR is up 8%, and the leveraged version COHX is up 16%. How to choose?

Coherent (COHR) +7.94%, surged from $374.01 to $403.71, gaining $30 in a single day. Its 2x leveraged ETF Tradr 2X Long COHR (COHX) rose +16.34% during the same period, from $57.78 to $67.22. At a glance, 16.34 ÷ 7.94 ≈ 2.06, almost exactly 2 times—this is the "intraday effectiveness" designed into leveraged ETFs.

But it's not that simple. In this article, I'll break down $Coherent Corp.(COHR.US) and $COHR 2X Long ETF(COHX.US) separately, and then discuss how to choose.

What does COHR do, and why did it surge so strongly on 5/13?

COHR is Coherent Corporation, a leader in photonic components, producing lasers, optical devices, and optical communication modules. It is one of the core suppliers for high-speed optical interconnects between GPUs in AI data centers. The company was originally named II-VI and changed its name to Coherent last year (absorbing the old Coherent brand it acquired).

The catalyst on 5/13 was a triple whammy. First, Morgan Stanley raised its price target to $400, right around the day's closing price, making the market think, "The target price is only here? That means there's still upside." Second, COHR was officially certified as an NVIDIA CPO (co-packaged optics) partner—this is the next-generation technology for AI optical communication, potentially securing large OEM orders directly from NVIDIA. Third, the CEO visited China and established strategic cooperation (the specific partner wasn't disclosed, but the market interpreted it as orders from Chinese cloud providers). The combination of these three events triggered a pre-market rally, closing up 7.94% for the day, with a cumulative +20.25% from 5/8 to 5/13.

What is COHX and how is it priced?

COHX is the Tradr 2X Long COHR Daily ETF (issued by AXS Investments), aiming to achieve 2 times the daily price movement of COHR. Note—it's "daily," not "long-term." It synthesizes 2x leverage through swap derivative contracts. The expense ratio is 1.49% per year (which is not low).

Daily reset means—if COHR rises 7.94% today, COHX rises 15.88% plus some error, hence 16.34%. If COHR falls 5% the next day, COHX falls 10%—but the starting point is yesterday's COHX closing price, not some original price of 2x COHR.

Sounds the same? It's not. A simple example—COHR rises 10% to $110 on day one, then falls 10% back to $99 on day two (a net -1%). COHX rises 20% to $60 on day one, then falls 20% to $48 on day two (a net -4%). Over two days, COHR is down 1%, while COHX is down 4%. This is "daily reset + path dependency decay."

After a period of ups and downs, COHX's actual performance often lags behind 2 times COHR's total gain. The greater the volatility, the heavier the decay.

Which one to choose in a market like 5/13?

My own judgment is two-tiered.

If your perspective is "following the AI optical communication trend long-term"—choose COHR. The fundamentals are materializing (NVIDIA CPO partnership, CEO's China visit, Morgan Stanley raising the target price), with excellent liquidity of $2.70B/day turnover, suitable for long-term holding without falling behind.

If your perspective is "betting on today / this week"—choose COHX. The intraday 2x amplification effect is real on a single big up day. But keep the position under 5%, set a clear profit-taking point, and don't hold overnight.

The worst choice is "holding COHX long-term as if it were 2x COHR"—this is the mistake beginners most easily make. It might be fine for a week, but holding for over three months will see a big chunk eaten away by decay.

Tips:

For leveraged ETFs, watch NAV, not the price chart—for intraday trading, monitor IIV (intraday indicative value), with official NAV calculated after the close. Avoid chasing if the bid-ask spread is too wide or too thin.
COHX liquidity ($97M/day) is 28 times less than COHR ($2.70B/day), often with a 5-10 cent spread; market orders can be disadvantageous, use limit orders.
For options, COHR has a deep options chain, COHX has a shallow one—for betting on volatility, it's better to buy COHR Calls directly than to use COHX options.
Bearish and want to go the other way? There's no -2x counterpart for COHX (Tradr's series currently has no COHR Bear). To short COHR, use Put options or borrow shares, don't use an inverse ETF (avoid guessing when there's no corresponding product).
Don't hold COHX overnight before earnings—after-hours volatility and high IV can amplify tracking errors for leveraged ETFs.

Hold COHR as a core position, watching the pace of NVIDIA CPO execution; use COHX to add some tactical exposure on days with expected event-driven surges (e.g., around the next NVIDIA GTC or TSMC's earnings call), exiting the same day. Use these two tools in combination, not as substitutes for each other.