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Date Open High Low Close Volume
11/05/2025 $5.91 $6.56 $5.91 $6.50 5.20K
11/06/2025 $6.50 $7.94 $6.50 $7.62 18.20K
11/07/2025 $8.02 $8.24 $7.20 $8.24 6.60K
11/10/2025 $8.00 $10.31 $6.91 $10.05 37.70K
11/11/2025 $10.35 $12.21 $8.53 $8.53 33.10K
Internet Patents is focused on developing and operating a business that licenses and utilizes its patented technologies. The patent portfolio consists of six patents which are: event log; system and method for optimizing and processing electronic pages in multiple languages; tabs for a graphical user interface; insurance rating calculation software component architecture; insurance agent contact system; and system and method for insurance rating calculation.
PTNT historical stock prices picture
PTNT (PTNT) has the following price history information. Looking back at PTNT historical stock prices for the last five trading days, on November 05, 2025, PTNT opened at $5.91, traded as high as $6.56 and as low as $5.91, and closed at $6.50. Trading volume was a total of 5.20K shares. On November 06, 2025, PTNT opened at $6.50, traded as high as $7.94 and as low as $6.50, and closed at $7.62. Trading volume was a total of 18.20K shares. On November 07, 2025, PTNT opened at $8.02, traded as high as $8.24 and as low as $7.20, and closed at $8.24. Trading volume was a total of 6.60K shares. On November 10, 2025, PTNT opened at $8.00, traded as high as $10.31 and as low as $6.91, and closed at $10.05. Trading volume was a total of 37.70K shares. On November 11, 2025, PTNT opened at $10.35, traded as high as $12.21 and as low as $8.53, and closed at $8.53. Trading volume was a total of 33.10K shares.

PTNT Historical Stock Prices By Date:

PTNT historical cagr picture

Below, we examine the compound annual growth rate — CAGR for short — of an investment into PTNT shares, starting with a $10,000 purchase of PTNT, and working forward through the historical stock price information to today.

Growth of $10,000.00
Without Dividends Reinvested

Start date: 02/17/2016
End date: 11/11/2025
Start price/share: $0.50
End price/share: $8.53
Dividends collected/share: $0.00
Total return: 1,606.00%
Average Annual Total Return: 33.81%
Starting investment: $10,000.00
Ending investment: $170,594.11
Years: 9.74
Date Close
11/05/2025$6.50
11/06/2025$7.62
11/07/2025$8.24
11/10/2025$10.05
11/11/2025$8.53
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