We have tracked the key short interest changes as of January 31 in the following semiconductor leaders: Intel Corp. (NASDAQ: INTC), Advanced Micro Devices Inc. (NYSE: AMD), Micron Technology Inc. (NASDAQ: MU), SanDisk Corp. (NASDAQ: SNDK), Qualcomm Inc. (NASDAQ: QCOM), ARM Holdings PLC (NASDAQ: ARMH), Broadcom Corp. (NASDAQ: BRCM), Marvell Technology Group Ltd. (NASDAQ: MRVL), Nvidia Corp. (NASDAQ: NVDA), Texas Instruments Inc. (NASDAQ: TXN) and Applied Materials Inc. (NASDAQ: AMAT).

We also chose to look at how the Market Vectors Semiconductor ETF (NYSEMKT: SMH) has held up.

Intel Corp. (NASDAQ: INTC) short interest fell 4.3% to 196.96 million shares. About 4% of Intel’s float is now short.

Advanced Micro Devices Inc. (NYSE: AMD) saw short interest drop by 11.1% to 89.97 million shares, or 14.9% of the company’s total float.

Qualcomm Inc. (NASDAQ: QCOM) short interest fell 12.2% to 12.71 million shares, which represents 0.7% of the company’s float.

ARM Holdings PLC (NASDAQ: ARMH) saw an 18.3% rise in short interest to 5.38 million shares, which represents about 1.2% of the firm’s float.

Micron Technology Inc. (NASDAQ: MU) showed a rise of 4.6% in short interest to 56.77 million shares, about 5.6% of Micron’s float.

SanDisk Corp. (NASDAQ: SNDK) saw short interest rise of 2% to 7.21 million shares, or 3% of the company’s float.

Broadcom Corp. (NASDAQ: BRCM) saw short interest fall by 2.7% to 6.28 million shares, or 1.2% of the total float.

Marvell Technology Group Ltd. (NASDAQ: MRVL) posted a 1.6% drop in short interest to 6.32 million shares, about 1.5% of Marvell’s float.

Nvidia Corp. (NASDAQ: NVDA) short interest fall by 24.5% to 16.67 million shares, or about 2.8% of the company’s float.

Texas Instruments Inc. (NASDAQ: TXN) saw short interest rise by 13.5% to 22.89 million shares, or 2.1% of the company’s float.

Applied Materials Inc. (NASDAQ: AMAT) short interest grew by 40% to 16.73 million shares. That is about 1.4% of the company’s float.

The Market Vectors Semiconductor ETF (NYSEMKT: SMH) showed a rise of 22.1% in short interest to 4.94 million shares.

Rising short interest in companies like Intel and AMD that have either a small or no presence in the mobile market reversed itself during this period. The increase at ARM came before the company reported quarterly earnings and boosted guidance. The huge short interest jump in the Applied Materials comes ahead of the company’s earnings report, which is scheduled for tomorrow.

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