Marvell's Lumentum deal was worth $1,132 a share at signing and $740 on November 12

A fixed share ratio means Lumentum holders get paid in Marvell stock, and Marvell stock has had a bad two weeks. The headline $1,132 a share was worth $740.03 at the November 12 close, and LITE traded below even that.

Marvell Lumentum acquisition: the deal terms

The two companies signed the merger agreement on November 1, 2026, and announced it the next morning, according to Marvell's 8-K and the joint press release.

The $1,132 figure is 4.5 times Marvell's October 28 close of $251.65. That was the last day before Bloomberg reported the talks, after the market closed.

Why Marvell and Lumentum stock fell

Both stocks are about a third lower than on October 28, and they fell for different reasons on different days.

Price

$624.65-32% over the window+23% off the low

Oct 28Nov 12

October 29: Marvell fell on the talks. Bloomberg said Marvell would likely pay in shares, and Raymond James analysts noted that an all-share deal avoids interest costs but costs Marvell holders ownership. Marvell fell 13.2%, while LITE rose 0.6%. The Nasdaq 100 also fell that day after big tech results renewed doubts about AI spending.

November 2: Lumentum fell on a strong quarter. The same morning, Lumentum reported revenue of $1.26 billion for the quarter ended September 26, guided to $1.575 billion to $1.625 billion for the next one, and said it had secured a second major NPO/CPO win "backed by purchase commitments exceeding $5 billion." The Motley Fool put adjusted EPS at $4.57 against a $4.21 consensus. None of it mattered much, because the fixed ratio had turned LITE into a claim on Marvell stock, and Marvell fell another 12.7%.

November 5: the whole group sold off. The Nasdaq fell 5.5%, its worst day since April 2025, on fears that AI data center spending would slow (CNBC). Optical stocks without a deal fell as hard that day: Coherent 13.0%, Credo 17.7%, MACOM 18.4% and Applied Optoelectronics 20.9%.

From the November 5 low to November 12, MRVL rose 23.1% and LITE 22.6%. Lumentum is still 44.9% below its October 6 peak close.

What the gap means for Lumentum stock

At the November 12 close, 4.5 Marvell shares were worth $740.03. LITE closed at $624.65, $115.38 lower. Put another way, LITE traded 15.6% below the value of the shares it is due to become.

Traders call that gap a merger spread, and it has widened since the last close before the announcement:

A spread prices two things. One is time: the deal is not expected to close until the first half of 2028, and investors who tie up money for more than a year want a return for it. The other is risk: the chance that regulators, a shareholder vote or a better offer stops the deal. A longer wait or more doubt means a wider gap.

Because the ratio is fixed, the dollar gap moves with Marvell. Every $1 move in MRVL moves the deal value by $4.50. The percentage is the cleaner read.

If the deal breaks, LITE trades on its own again, and a fee may change hands:

• $3.2 billion from Marvell to Lumentum if the deal ends at the outside date or on a final antitrust or foreign-investment block, with every other condition met.
• $5.8 billion from Marvell if its board withdraws its recommendation or it goes for a superior proposal, plus certain later cases.
• $2.9 billion from Lumentum in the matching cases on its side.

We don't give a view on whether to trade it. A wide spread can widen further, as this one did when Marvell fell in early November, or if a regulator raises doubts.

What Serenity said about the deal

Serenity posts as @aleabitoreddit on X, one of the accounts with a long graded record in the Quantral app. These are that account's opinions, not Quantral's.

The day after the Bloomberg report (October 29):

"...$MRVL is in the final stages of a deal to acquire $LITE. Attempting to vertically integrate the most supply constrained chokepoints… with lasers."

On the announcement, Serenity argued the other laser makers gained the most (November 2):

"My opinion is that independent Western laser players, like $AAOI, $COHR, and $SIVE became a lot more strategically valuable... M&A premiums likely went up."

On what the structure means for LITE holders (November 2):

"$LITE shareholders can cry though about the 1+ year overhang until deal goes through in 2028. There's less independent price discovery as well since a lot of it will be pegged around 4.5 Marvell shares : 1"

And, in the same post, on how the deal could have been built:

"Having a fixed dollar MC value floor probably would have been better than the 4.5x:1 ratio."

The sharpest pushback on the deal's logic came from a rival. On November 5, Serenity summarized Coherent's earnings call: asked about the merger, Coherent's management said customers will prefer an independent optical supplier without competitive conflicts. If buyers do avoid a laser maker owned by a chip company they compete with, Marvell loses some of the sales it is paying for. Light Reading laid out the conflict: Lumentum sells lasers to transceiver makers that also buy Marvell's DSP chips. The companies say modules will be under 10% of combined revenue.

It is too early to call. From October 28 to November 12, Coherent fell 3.1% and MACOM 5.8%, far less than Lumentum or Marvell, while Semtech fell 18.7% and Applied Optoelectronics 35.7%.

Acquisitions have changed Marvell's supplier ties before: in April, after buying Celestial AI, it cancelled all of Celestial AI's purchase orders with POET, saying POET had broken its confidentiality obligations, as our POET page explains. For the wider group, see our AI infrastructure stocks list.

What to watch before the deal closes

1. The S-4. Marvell has to file a registration statement for the new shares, and it has to be declared effective before closing. An S-4 sets out the background of the talks and the bankers' fairness opinions.
2. Two shareholder votes. Lumentum holders vote to adopt the merger agreement. Marvell holders vote on issuing the new shares and a charter amendment.
3. Regulators. The HSR waiting period has to expire, and certain other regulatory approvals are needed. The filings do not name the other jurisdictions.
4. The outside date. November 1, 2027, at 11:59 p.m. Pacific. If regulatory approvals are still pending, it extends to February 1, May 1 and then August 1, 2028.
5. Marvell's share price. With no collar, it sets what LITE holders get. Watch the spread in percent, not dollars.

Common questions

What do Lumentum shareholders get in the Marvell deal?

4.5 Marvell shares for each Lumentum share, plus cash for any fractional share. At the November 12 close that was worth $740.03 a share.

When will the Marvell Lumentum deal close?

The companies expect it to close in the first half of calendar 2028. It needs both shareholder votes, an effective S-4, Nasdaq listing of the new shares, HSR expiry and other regulatory approvals.

Is the Marvell Lumentum deal cash or stock?

Stock. Lumentum holders get Marvell shares at a fixed ratio, with cash only for fractional shares. There is no collar, so the value rises and falls with Marvell.

What happens to LITE if the deal fails?

Lumentum keeps trading on its own. If the deal ends on an antitrust or foreign-investment block or at the outside date with every other condition met, Marvell pays Lumentum $3.2 billion.

Why did Marvell stock fall after the Lumentum deal?

Marvell fell 13.2% the day after Bloomberg reported it would likely pay in shares, which dilutes Marvell holders, and 12.7% on the announcement day. It then fell 16.4% in the November 5 AI selloff. We don't give buy or sell advice.

Try it

Follow what the accounts we track say about Lumentum and Marvell while the deal works through its votes and approvals, with every post and the record of the account behind it. Quantral is an investment ideas app built on alternative data, on the web at app.quantral.com, on iOS and on Android, with a 7-day free trial on the yearly plan. For what the optics layer does, see what AI infrastructure is.

Prices are daily closes through November 12, 2026. Deal terms are from the merger agreement and press release filed with the SEC on November 2, 2026, linked above. Positions attributed to accounts are their views, not Quantral's.

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