It’s been a continual seesaw for stocks this week amid persistent worries of slowing global economic growth and concerns that companies have seen peak earnings growth. Friday continued the trend, starting out on a sour note following earnings reports from two of the biggest tech companies.

The Dow Jones Industrial Average DJIA, -0.89% was down as much as 2.2% in morning trading, while the S&P 500 index SPX, -1.27% lost as much as 2.9% and the Nasdaq Composite COMP, -1.69% declined as much as 3.6%.

Mixed results from Amazon.com AMZN, -7.25% disappointed investors and sent the shares down as much as 10% in morning trading. Google holding company Alphabet GOOG, -2.20% GOOGL, -2.07% beat analysts’ earnings estimates but reported sales that didn’t grow as fast as expected, and those shares fell as well.

More on market volatility:

• The stock market’s technical indicators are suggesting ‘the bottom is in’

• Don’t sell now — we’re not heading into a bear market for stocks

Friday’s biggest losers

Here’s how all 30 components of the Dow Jones Industrial Average were faring at about 11:15 a.m. ET:

Company Ticker Price change - Oct. 26 Price change - Sept. 28 through Oct. 26 Price change - 2018 through Oct. 26 Price change - 2017 Home Depot Inc. HD, -3.26% -4.3% -17.3% -9.6% 41.4% Cisco Systems Inc. CSCO, -1.85% -3.1% -9.5% 15.0% 26.7% Visa Inc. Class A V, -0.91% -2.9% -9.1% 19.6% 46.1% American Express Co. AXP, -2.00% -2.8% -5.4% 1.4% 34.1% Microsoft Corp. MSFT, -0.55% -2.6% -7.7% 23.4% 37.7% DowDuPont Inc. DWDP, -0.91% -2.6% -19.8% -27.6% 24.5% Nike Inc. Class B NKE, -1.34% -2.5% -15.8% 14.0% 23.1% Boeing Co. BA, -1.13% -2.4% -4.5% 20.4% 89.4% Bed Bath & Beyond Inc. BBBY, -1.41% -2.3% -12.5% -40.3% -45.9% Apple Inc. AAPL, -1.26% -2.2% -4.8% 27.0% 46.1% UnitedHealth Group Inc. UNH, -1.58% -2.2% -2.8% 17.3% 37.8% Coca-Cola Co. KO, -1.61% -1.9% -1.2% -0.5% 10.7% United Technologies Corp. UTX, -0.27% -1.8% -12.6% -4.2% 16.4% Pfizer Inc. PFE, -1.36% -1.8% -3.2% 17.8% 11.5% Goldman Sachs Group Inc. GS, -0.75% -1.6% -6.1% -17.3% 6.4% JPMorgan Chase & Co. JPM, -0.69% -1.5% -8.4% -3.4% 23.9% International Business Machines Corp. IBM, -1.02% -1.3% -17.4% -18.6% -7.6% McDonald's Corp. MCD, -0.84% -1.2% 3.6% 0.7% 41.4% Walt Disney Co. DIS, -0.67% -1.0% -3.3% 5.2% 3.2% Johnson & Johnson JNJ, -1.03% -1.0% -0.8% -1.9% 21.3% Merck & Co. Inc. MRK, -0.52% -1.0% -2.3% 23.1% -4.4% Procter & Gamble Co. PG, -1.12% -0.9% 6.0% -4.0% 9.3% Travelers Cos. Inc. TRV, +0.01% -0.9% -7.4% -11.4% 10.8% Walmart Inc. WMT, -0.62% -0.9% 4.7% -0.4% 42.9% Verizon Communications Inc. VZ, +0.12% -0.8% 4.8% 5.7% -0.8% Exxon Mobil Corp. XOM, -0.34% -0.8% -8.6% -7.1% -7.3% 3M Co. MMM, +0.24% -0.6% -12.7% -21.8% 31.8% Chevron Corp. CVX, +0.23% -0.3% -9.0% -11.1% 6.4% Walgreens Boots Alliance Inc WBA, +0.37% 0.0% 3.9% 4.3% -12.3% Intel Corp. INTC, +3.41% 3.0% -3.5% -1.2% 27.3% Source: FactSet

You can click on the tickers for more about each company, including news, profiles, price ratios, charts and financials.

Here are the morning’s 10 biggest losers among the S&P 500:

Company Ticker Price change - Oct. 26 Price change - Sept. 28 through Oct. 26 Price change - 2018 through Oct. 26 Price change - 2017 Mohawk Industries Inc. MHK, -21.28% -20.8% -31.8% -56.6% 38.2% Western Digital Corp. WDC, -17.40% -19.6% -25.8% -45.4% 17.0% SVB Financial Group SIVB, -9.60% -12.1% -25.4% -0.8% 36.2% Cerner Corp. CERN, -10.86% -11.9% -14.7% -18.5% 42.3% Fortune Brands Home & Security Inc. FBHS, -7.81% -11.2% -20.7% -39.3% 28.0% Seagate Technology PLC STX, -6.52% -10.0% -19.0% -8.4% 9.6% Advanced Micro Devices Inc. AMD, -8.35% -9.8% -43.7% 69.2% -9.3% CenturyLink Inc. CTL, -6.41% -8.7% -9.3% 15.3% -29.9% Amazon.com Inc. AMZN, -7.25% -8.6% -18.7% 39.2% 56.0% Weyerhaeuser Co. WY, -6.39% -8.5% -17.9% -24.8% 17.2% Source: FactSet

And here are the 10 worst performers among the Nasdaq 100 NDX, -1.88% at about 11:15 a.m. ET:

Company Ticker Price change - Oct. 26 Price change - Sept. 28 through Oct. 26 Price change - 2018 through Oct. 26 Price change - 2017 Western Digital Corp. WDC, -17.40% -19.6% -25.8% -45.4% 17.0% Cerner Corp. CERN, -10.86% -11.9% -14.7% -18.5% 42.3% Seagate Technology PLC STX, -6.52% -10.0% -19.0% -8.4% 9.6% Amazon.com Inc. AMZN, -7.25% -8.6% -18.7% 39.2% 56.0% Charter Communications Inc. Class A CHTR, -5.38% -7.6% -10.7% -13.4% 16.7% Micron Technology Inc. MU, -3.86% -5.7% -23.3% -15.6% 87.6% vidia Corp. NVDA, -3.71% -5.6% -30.2% 1.4% 81.3% Broadcom Inc. AVGO, -4.38% -5.4% -14.8% -18.1% 45.3% Workday Inc. Class A WDAY, -2.46% -5.2% -18.3% 17.3% 53.9% Netflix Inc. NFLX, -2.52% -5.1% -20.6% 54.7% 55.1% Source: FactSet