Lumentum Stock: 5 Straight Red Days, Down 45%

LITEYTD+46.1%SPYYTD+8.4%QQQYTD+7.1%
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Shares of Lumentum (LITE) have closed lower in each of the last 5 sessions, a cumulative decline of 44.6%. That erased about $37.9 billion from the company’s market value, which now stands at about $47.1 billion. The stock closed at $509.70 on Thursday, November 5, 55.0% below its 52-week high of $1,133.40 and 124.7% above its low of $226.86.

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LITE Versus The S&P 500

Returns for LITE and the S&P 500 over the streak and the periods around it, all ending Thursday, November 5 and including dividends:
 

Return Period LITE S&P 500
1 Day -18.7% -4.4%
5 Days (Current Streak) -44.6% -4.7%
1 Month (21 Trading Days) -54.1% -5.7%
3 Months (63 Trading Days) -42.7% -5.0%
Year To Date 38.3% 8.4%
1 Year (252 Trading Days) 170.6% 9.9%

Is This Move About Lumentum Or The Market?

The market explains little of this: the S&P 500 lost 4.7% over the same 5 sessions, including dividends, against Lumentum’s -44.6%. 5 other S&P 500 stocks are currently on losing streaks of 5 days or longer. Over the past three months the stock is down 42.7%, a window that includes the streak; over the other 58 sessions of that window it was up 3.3%.

Is The Business As Weak As The Stock?

On the fundamentals, revenue grew 103.2% over the last twelve months, against a median of 17.9% for S&P 500 Information Technology stocks; and its operating margin is 23.4%, versus a median of 21.5%. Lumentum does not have positive trailing earnings, so there is no meaningful price-to-earnings multiple to compare. The read is mixed.

If the drop has you weighing an entry, resist buying on price alone. Our Buy the Dip screen ranks the marked-down names where growth and cash generation still hold up.

A Slide Like This Is Why Diversification Exists

Watching one stock fall day after day is the clearest lesson the market teaches about single-name risk. Whether this particular decline is an opportunity or a warning, the deeper point is the same: no one name should be able to do this to your portfolio.

The Trefis High Quality (HQ) Portfolio is built on that principle: roughly 30 businesses selected for consistent cash generation, strong margins, and resilient balance sheets, sized and rebalanced with rules. It has a track record of outpacing a benchmark that combines the S&P 500, the S&P MidCap 400, and the Russell 2000. Study the slide; spread the risk.