Why AI Stocks Like POET, COHR, LITE, AAOI Swing on a Yo-Yo

Why AI Stocks Like POET, COHR, LITE, AAOI Swing on a Yo-Yo

Wall Street is borrowing $500 billion for AI. POET is sitting on $796 million. We read only POET’s public filings to show why the small end of the optics trade gets whipped the hardest.

Wednesday morning the 10-year Treasury printed 5.35%. That's the highest since April 2002. The 30-year touched 5.72% and the Dow gave back 500 points before lunch. Twenty-four hours earlier the Nasdaq sat at a record. Nvidia $NVDA tagged $243 and change, a hair under $6 trillion. AMD $AMD is a trillion-dollar company now.

Then Treasury sold $39 billion of 10-year notes at 1 PM Wednesday, and the buyers showed up. The sale cleared at 5.30%, the highest yield on a 10-year auction since 2000, per CNBC. Indirect bidders, the bucket that holds foreign central banks, took 80.3% of it against a 72.4% average for the last ten sales. BMO called it strong. The 10-year backed off to 5.28%. The 30-year slipped under 5.66%. By 2 PM the Dow had cut its loss to about 300 points, the S&P 500 was down 0.2%, the Nasdaq about 0.3%, and the AI names were bidding again. Then the Fed's September minutes landed at 2, and most of the committee was on record that another hike would likely be appropriate by year end. That's a three-week-old conversation, held before the soft September jobs report, and the market had October hike odds near 20% going in. The indexes closed well off the lows. The S&P 500 and Nasdaq each finished down 0.2%, the Dow down 0.7%, the first red session of October after Tuesday's records.

That's the AI trade on one screen. Stocks at the highs, bonds at the lows, and a 60-basis-point jump in the 10-year since July that nobody has fully priced. One clean auction doesn't unwind that. It just says the market can still find a price.

We wanted to see what all of that looks like from inside one small-cap photonics name. So we pulled the public filings for POET Technologies $POET and nothing else. No management calls. No channel checks. Just the 6-Ks on EDGAR and the tape. Turns out the filings had plenty to say.

The AI buildout stopped paying cash a while ago

● The hyperscalers, Amazon $AMZN, Microsoft $MSFT, Alphabet $GOOGL, Meta $META and Oracle $ORCL, borrowed $108 billion in 2025, per Goldman Sachs Research. They borrowed $194 billion in the first half of 2026 alone.

● Goldman's count of AI-related debt, hyperscalers plus the rest of the ecosystem, was closing in on $500 billion by August. The hyperscalers were only about 40% of it.

● Roughly a third of hyperscaler capex is being debt-financed this year. In 2025 it was 27%.

● AI-linked issuers trade about 115 basis points over Treasuries. The broad investment-grade market trades at 78. Bond buyers are charging a premium for the privilege.

● Goldman now expects hyperscaler issuance of about $420 billion in 2027, up 60% from this year.

Read that list again with a 5.3% risk-free rate in your head. That's what Treasury just paid for ten-year money, and the buyers took it. Every data center lease, every power contract, every GPU depreciation schedule gets discounted at a higher number than it did in July. That's not a bear call on AI. It's arithmetic. We mapped what a Warsh hike does to the chip names in our Fed game theory piece. The bond market has since done its own hiking.

The credit tape agrees. The bond behind Meta's Hyperion data center has traded near 6.95%, up from a 5.65% low, per FT Alphaville. Order books on hyperscaler deals thinned from about five times covered in February to two times by July, per Apollo data cited by Reuters. And the pipeline keeps filling. SpaceX $SPCX slipped Wednesday morning on a report that it's headed to the debt market for $40 billion to pay for Nvidia chips, per Yahoo Finance. The money is still showing up. It's just asking more questions.

What a $1.3 billion photonics company has to do with any of this

POET designs optical engines and light sources for AI clusters and hyperscale data centers. That's the company's own description in the Q2 2026 results filed with the SEC. Those parts are built for the buildings those $500 billion of bonds are paying for. Shipping into them at scale is the next chapter, not the current one. The stock doesn't wait for chapters. It already inherits the whole AI trade's mood, with a small-cap multiplier on top.

POET isn’t alone out there. Coherent $COHR, Lumentum $LITE and Applied Optoelectronics $AAOI sell the lasers, transceivers and modules that go into those racks today. That group has been the hottest trade of 2026 and the most whipsawed. Applied Optoelectronics printed a 17% down day and a 17% up day inside five weeks this summer. Coherent and Lumentum have each dropped around 10% in a single session more than once since July, with no company news attached. Now go down the cap table to a $1.3 billion name that's building for the same racks. Same wind, smaller boat.

The exposure lives in the order book, not the revenue line. Q2 revenue was $569,925. Up 13% from Q1, up 112% from a year ago, the sixth straight quarter of sequential growth. Small number. Behind it sits a $50 million initial purchase order from Lumilens, which the filing calls the first phase of a relationship that could reach $500 million-plus over five years. A customer placed a nine-figure framework on a company doing half a million a quarter. That gap is what the stock trades on. We walked through the whole release the morning it hit.

Gaps like that are where volatility lives. The 52-week range is $3.87 to $20.81. Five times, low to high, inside twelve months. September realized vol ran near 70% by our count. The stock opened the week near $8 and was $7.33 by 10 AM Wednesday, down 5% with no company news. It printed $7.24 at the low, sat at $7.33 through the auction while the indexes repaired, and closed at $7.42, down 3.8% on about 10 million shares. That’s the bond market talking, not POET. The small end hears the all-clear last, and it heard about half of it by the bell.

The volatility shows up in the filings. Literally.

Now the line most people skip. Through the start of this year, POET carried a block of warrants priced in one currency while its books ran in another. Under IFRS that mismatch makes them a liability that gets remeasured every quarter. The MD&A says it plainly: the adjustment “is affected by the Company’s stock price at each reporting date.” In English: when the stock went up, POET booked a non-cash loss. When it went down, it booked a gain. Backwards from how it feels, and it's right there in the table.

Watch the swing.

● Q1 2025: a $15.4 million gain. POET reported net income that quarter. Yes, income.

● Q2 2025: a $7.6 million loss.

● Q4 2025: a $30.7 million loss. The stock had run, and the headline net loss printed at $42.7 million.

● Q1 2026: a $1.6 million gain.

● Q2 2026: a $5.5 million gain, which helped the net loss narrow to $11.3 million, or seven cents a share.

Same company. Same roadmap. A $46 million spread between the best and worst quarters on that one line, and none of it was cash. Operating cash flow in Q2 was negative $12.2 million. That's the number that measures the business. The headline measures the stock.

Here's the part the screeners haven't caught up to. On March 6, 2026, POET repriced those warrants into US dollars. One currency for the warrants and the books. That eliminated most of what the balance sheet calls the derivative warrant liability: $135.6 million at December 31, $2.6 million at March 31, with $131.4 million of warrant value moved into equity on the way. That's the whole difference between the 2025 swings on the list above and the 2026 ones. What's left at June 30 is $22.0 million, and nearly all of it is the 2.29 million vested warrants tied to the $500 million supply agreement, which carry a cashless-exercise feature and still get marked each quarter. So the exposure isn't gone. It's working on a base about a sixth the size.

So when a screener flags POET for a massive earnings miss on a quarter like Q4 2025, check which line did it. Volatility that gets marked to market will fool a machine every quarter. It shouldn't fool you. And the number that fooled it last year is mostly off the books now.

The part nobody mentions: higher yields pay POET

Flip the bond story around. The hyperscalers are borrowers. POET is a lender. Its $796.3 million in cash and short-term investments sits in the same paper everyone else is selling, and it collects the coupon. Other income, mostly interest, was $4.3 million in Q2. A year earlier it was $533,000. Interest expense in Q2 was $67,894. Not a typo.

Set that against the burn: $4.3 million of interest versus $12.2 million of operating outflow. Roughly a third covered, and Q2 only had the $400 million May raise in hand for about six weeks. With Fed funds at 3.75% to 4% after September’s hike, most of the committee on record for one more, and a full quarter of the May money in the bank, that line grows on its own. We're not calling it a business. Interest is a cushion, not a model, and the revenue line still has to do the work. But in a market where AI borrowers pay 115 over, there's something to be said for being the one holding the Treasuries.

Reading the room

● The auction wasn't sloppy. It was the opposite. A 10-year that pays 5.3% and still draws 80% indirect take-up is a bond market finding its level, not losing it. That's the better branch for every long-duration name, and a $1.3 billion AI small cap is as long-duration as it gets. The first tick still isn't information. POET closed Wednesday down 3.8% against indexes down 0.2%, so it caught some of the bid and not all of it. Wait for the second day.

● Know which line is cash. There's still a warrant mark, but it's a fraction of what it was. The March repricing took $131 million of it off the liability line, and what's left is about $22 million. It'll move with the stock in Q3, just a lot less. Skip it and go straight to cash flow from operations.

● The Q3 print lands mid-November if the company keeps its cadence, and if the pattern holds, there's no call. The release is the whole event. Read it the way we read Q2: cash in the subhead, production units shipped, new orders.

● Bonds are still the AI trade's risk gauge. Wednesday the 10-year found buyers at 5.3%. Thursday Treasury sells $22 billion of 30-year bonds at 1 PM. Same test, longer duration, and the 30-year printed a 24-year high of its own Wednesday morning. Clear that one too and the week's supply is behind the AI trade. Tail it, and the small caps feel it first and worst.

POET is six quarters into sequential revenue growth with $796 million in the bank, a nine-figure customer framework, and parts designed for the buildout the entire bond market is financing. The volatility isn't a bug in that story. It's the toll. You just need to know which numbers it's allowed to touch.

Subscribe to StockAlpha.ai for the next read before it hits the tape.