Semiconductor stocks have been some of the hottest securities on the market in 2018, but for the second straight day, the sector has experienced a selloff. 

The VanEck Vectors Semiconductor ETF (SMH) fell more than 1% Friday after posting its largest single-day drop since December 2016 after falling 4.5%. 

Investors may be worried that the good times may be over.

After peaking at a year to date high of $113.07, but today the stock is trading at $99. 

Here's how the individual Individual components of the ETF have faired today. 

Intel Corp. (INTC) (8.4% weighting) - fell 1.4%.

Taiwan Semiconductor Manufacturing Co. (TSM) (7.34% weighting) - fell 1.44%.

Broadcom Inc. (AVGO) (weighting 5.39%) - fell 2.36%.

Micron Technology Inc. (MU) (weighting 5.23%) - fell 1.56%. 

ASML Holding Inc. (ASM) (weighting 5.2%) - fell 1.07%.

Nvidia Corp. (NVDA) (weighting 5.2%) - fell 0.14%. 

Texas Instruments Inc. (TXN) (weighting 5.12%) - fell 1.3%.

Analog Devices Inc. (ADI) (weighting 4.78%) - fell 0.1%. 

Applied Materials Inc. (AMAT) (weighting 4.73%) - fell 0.2%.

Qualcomm Inc. (QCOM) (weighting 4.62%) - fell 2.15%. 

Lam Research Corp. (LRCX) (weighting 4.44%) - rose 0.8%. 

Microchip Technology Inc. (MCHP) (weighting 4.4%) - rose 0.63%. 

NXP Semiconductors NV (NXPI) (weighting 4.28%) - fell 1.88%.

Skyworks Solutions Inc. (SWKS) (weighting 3.97%) - fell 2.88%. 

KLA-Tencor Corp. (KLAC) (weighting 3.87%) - fell 0.79%.