---
title: "Trending | CIFR Plummets 8% last Friday, Some Put options Soar 100%"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/286713220.md"
description: "On May 15, Eastern Time, Cipher Digital options saw a total of 166421 contracts traded, with calls accounting for 57% and puts making up 42%."
datetime: "2026-05-18T04:27:17.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/286713220.md)
  - [en](https://longbridge.com/en/news/286713220.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/286713220.md)
---

# Trending | CIFR Plummets 8% last Friday, Some Put options Soar 100%

On May 15, Eastern Time, Cipher Digital options saw a total of 166421 contracts traded, with calls accounting for 57% and puts making up 42%.

Cipher Digital has 1479431 contracts outstanding, with calls accounting for 65% and puts making up 34%.

The top volume gainer was the 20.5 dollars Put option expiring on May 22, 2026, with 11208 contracts traded.

On the news front, Based on recent key news:

1\. May 12, Kelly Patrick Arthur, Co-President and COO, sold 48,000 shares of Cipher Mining at an average price of $19.36 per share, totaling $929,280. This insider selling may have contributed to the stock's decline.

2\. May 15, Alpine Fox Capital disclosed substantial holdings in Cipher Mining, owning 3.762 million shares valued at approximately $48.4 million. Despite this significant investment, the stock price fell, possibly due to broader market conditions.

3\. May 15, Needham raised Cipher Mining's price target to $25.00 per share from $22.00. However, the stock did not react positively, indicating potential investor skepticism or other market factors.Bitcoin mining sector faces volatility; monitor closely.

Please note: The chart below does not include options expiring within five days.

![image](https://assets.lbctrl.com/h5hub/optrank/images/2026-05-18/ST_US_CIFR_en.png)

### Related Stocks

- [CIFR.US](https://longbridge.com/en/quote/CIFR.US.md)

## Related News & Research

- [Cipher Mining (NASDAQ:CIFR)  Shares Down 9%  After Insider Selling](https://longbridge.com/en/news/286582580.md)
- [Cipher Stock Is On The Move: The Chart Tells An Interesting Story](https://longbridge.com/en/news/287259372.md)
- [CloudAlpha Capital Management Limited Hong Kong Invests $1.58 Million in Cipher Mining Inc. $CIFR](https://longbridge.com/en/news/287029144.md)
- [This Insider Has Just Sold Shares In Cipher Digital](https://longbridge.com/en/news/286432147.md)
- [Cipher Digital Co-President, COO Sold Shares Worth Over $929K](https://longbridge.com/en/news/286474833.md)