Santa Ana-based TTM Technologies (Nasdaq: TTMI) dropped 11% to about $107 per share and a market cap of $11.4 billion on Monday. The printed circuit board maker announced a $400 million investment to expand capacity across four key facilities in China and its strategic Southeast Asia plant in Penang, Malaysia.

Shares of Alignment Healthcare (Nasdaq: ALHC) increased 9.7% to $8.27 apiece and a $1.7 billion market cap during midday trading. Today, the Orange-based provider of Medicare Advantage for seniors said it is launching a new plan called Central Health Harmony (HMO) on Jan. 1, 2027 that will be available in Los Angeles and Orange counties.

Alignment Healthcare Inc. (Nasdaq: ALHC) fell nearly 16% to $7.33 a share with a market cap of $1.5 billion after the Centers for Medicare & Medicaid Services downgraded the Medicare Advantage insurer’s largest California health plan from four stars to 3.5 stars. The Orange-based company said it “believes the rating does not accurately reflect the contract’s longstanding performance on evidence-based measures of quality, clinical outcomes and member experience.”

Irvine-based enVVeno Medical Corp. (Nasdaq: NVNO) rose 4.8% to $8.86 with a market cap of $6 million. The medical device maker recently showcased its experimental replacement venous valve at a medical conference in Las Vegas, following FDA approval earlier this year to begin a pivotal U.S. clinical trial. The company expects to begin enrolling patients in the trial during the fourth quarter.

Glaukos Corp. (Nasdaq: GKOS) shares climbed 7% to $173, bringing its market cap to $10.1 billion. The Aliso Viejo company, which develops therapies for glaucoma, corneal disorders and retinal diseases, will announce its third-quarter 2026 results after the market closes on Wednesday, Oct. 28.

Xponential Fitness Inc. (NYSE: XPOF) shares rose 4.6% to $5.05, giving the company a market cap of $250.3 million. According to MarketBeat, most analysts recommend holding the Irvine-based boutique fitness franchisor’s stock and advise caution for new investors.

Ducommun Incorporated (Nasdaq: DUO) shares dropped 5% to $166.53, putting its market cap at $2.5 billion. The Costa Mesa manufacturing and engineering company, which serves aerospace, defense and industrial markets, is trading at 55% below its average daily volume.

Shares of Onterris Inc. (NYSE: ONT) rose 8.2% to $13.75 apiece with a $477 million market cap on Monday. The environmental services firm, headquartered in Little Rock, Ark. with its leadership team based in Irvine, is recovering from a new 52-week low of $12.26 last Friday.

However, Onterris is still down about 55% from its 52-week high of $30.90 a year ago in October.

Anaheim-based EACO Corp. (OTCID: EACO) dropped 11% to $115 apiece and a $559 million market cap during midday trading. Shares of the distributor of electronic components and fasteners, which does business as Bisco Industries, were previously rising following its third quarter report of record net sales in July.

Huntington Beach-based Karman Holdings Inc. rose 6.4% to $33.94 per share with a market cap of $4.5 billion, extending a rebound that began Thursday (NYSE: KRMN). Shares of the defense and space supplier are recovering from a steep selloff amid continued analyst support. Chairman David Stinnett, a partner at private equity firm Trive Capital, recently purchased 27,000 shares for about $1 million, bringing his direct holdings to 3.53 million shares.

TTM Technologies Inc. (Nasdaq: TTMI) is up nearly 6% to $133.94 apiece with a market cap of $4.5 billion. Shares of the Santa Ana-based printed circuit board maker extending gains after completing its $1.1 billion acquisition of Epiq Solutions this week. The deal expands the electronics maker’s defense and aerospace business with AI-enabled software-defined radios, RF products and space-computing technology.

Irvine-based loanDepot Inc. (NYSE: LDI) rose 3.8% to 64 cents apiece with a market cap of about $283 million. Shares of the mortgage lender have gained for a second straight day but remain below the $1 threshold required by the New York Stock Exchange. LoanDepot received a delisting warning in August after its average closing price remained below $1 for 30 consecutive trading days. The company has six months from the Aug. 21 notice to regain compliance.

Shares in TTM Technologies Inc. (Nasdaq: TTMI) rose 2.4% to $125.83 apiece and a $13.2 billion market cap. The Santa Ana-based printed circuit board maker yesterday announced the completion of Epiq Design Solutions for $1.1 billion.

Irvine-based medical device contract manufacturer Pro-Dex Inc. (Nasdaq: PDEX) fell 4.5% to $65.92 and a $211 million market cap. Today’s volume was a third of its daily average.

Veritone Inc. shares dropped10% to $1.19, giving the company a market cap of $112 million. The Irvine AI software firm continues to face pressure because of worries about its cash reserves and $45.6 million in convertible debt due in November (Nasdaq: VERI).

Shimmick Corp shares fell 4% to $3, with a market cap of $141 million. The Irvine construction and engineering company is trading at half its usual volume (Nasdaq: SHIM).

Kura Sushi USA Inc. rose 3.5% to $40.53 per share, bringing its market cap to $452 million. However, the Irvine restaurant chain’s stock is still down 14% since the start of September (Nasdaq: KRUS).

Implantable lens maker STAAR Surgical (Nasdaq: STAA) in Lake Forest surged 8.6% $22.67 per share for a market cap of $1.1 billion following an upgrade from Stifel, which pointed to improving international sales momentum and favorable product mix trends. Analyst Thomas Stephan raised Stifel’s rating on the ophthalmic medical device manufacturer to Buy from Hold while lifting its price target to $31 from $28.

Western themed-retailer Boot Barn Holdings (NYSE: BOOT) in Irvine was down 3.8% at $121.49 for a market cap of $3.7 billion after investor website Simply Wall St. said store expansion and Western focus “could backfire if new locations underperform or shopper tastes shift.”

IPS Nationwide told California state officials it plans to permanently lay off 50 people in Costa Mesa, effective Nov. 17.

Huntington Beach-based Karman Holdings fell 6.6% to $33.33 per share with a $4.4 billion market cap (NYSE: KRMN). Analyst firm RBC Capital cut its price target for the aerospace and defense firm on Monday from $85 to $70 per share, while maintaining its ‘Outperform’ rating.

Irvine-based Tilly’s Inc. increased 5.9% to $4.52 apiece and a $139 million market cap (NYSE: TLYS). Shares of the youth apparel retailer have nearly quadrupled since a 52-week low of $1.14 in November last year.

Staar Surgical Co. (Nasdaq: STAA) rose 6.2% to $20.26 with a market cap of about $1 billion. Shares of the Lake Forest-based lens maker climbed after its board authorized a $50 million share repurchase program this week. The company said the buyback reflects management’s confidence in its business and its view that the shares are “substantially undervalued.”

Alignment Healthcare Inc. (Nasdaq: ALHC) rose 8.4% to $8.34 apiece with a market cap of $1.7 billion. Shares of the Orange-based Medicare Advantage insurer rebounded after hitting a 52-week low of $7.37 on Thursday. The stock has been under pressure since management disclosed higher-than-expected spending and medical costs at an investor conference last week.

Sonendo Inc. rose 11% to $1.89 and a $9 million market cap. The Laguna Hills maker of dental equipment on Monday announced that more than 2 million patients have now been treated with its GentleWave procedure, a minimally invasive process that cleans and disinfects regions of the root canal system (OTC: SONX).

Reborn Coffee Inc. jumped 13% to $1.23 apiece with a $10.6 million market cap. Shares in the Brea-based coffee chain are up 47% since announcing the appointment of Edward Park and James Lim to its board of directors on Sept. 11 (Nasdaq: REBN).