# Why Zerodha is not allowing to buy ST category shares?
**URL:** https://tradingqna.com/t/why-zerodha-is-not-allowing-to-buy-st-category-shares/26777
**Category:** Stocks
**Created:** [November 21, 2017, 6:58am UTC](https://tradingqna.com/t/why-zerodha-is-not-allowing-to-buy-st-category-shares/26777 "2017-11-21T06:58:41Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Lax](https://tradingqna.com/u/Lax)
#### Post date: [November 21, 2017, 6:58am UTC](https://tradingqna.com/t/why-zerodha-is-not-allowing-to-buy-st-category-shares/26777/1 "2017-11-21T06:58:41Z")
Why Zerodha is not allowing to buy ST category shares?
---
### Author:  [@Sanket](https://tradingqna.com/u/Sanket)
#### Post date: [November 23, 2017, 3:46pm UTC](https://tradingqna.com/t/why-zerodha-is-not-allowing-to-buy-st-category-shares/26777/2 "2017-11-23T15:46:52Z")
> [@Lax](#):
>
> Why Zerodha is not allowing to buy ST category shares?
Because these are useless stocks and in certain stocks 100% of your margin will be blocked. Check this post for more
> [@What is BSE's S+ framework?](https://tradingqna.com/t/what-is-bses-s-framework/15673/2):
>
> Hello, 52 companies have been moved to BSE’s new S+ framework for enhanced monitoring to curb excess volatility. The ‘S+’ framework consists of the SS group and the ST group. SS group stocks are settled on a normal rolling basis and ST group stocks are settled on a trade to trade basis(Only delivery trades allowed, intraday and BTST not allowed). Identification of securities for S+ framework is carried out on a monthly basis based on pre-defined objective criteria. After identification, securi…
---
### Author:  [@Srinivas](https://tradingqna.com/u/Srinivas)
#### Post date: [November 23, 2017, 5:34pm UTC](https://tradingqna.com/t/why-zerodha-is-not-allowing-to-buy-st-category-shares/26777/3 "2017-11-23T17:34:29Z")
ST category stocks in Stage 2 or above require an additional surveillance deposit and I don’t think the depository has the provision for blocking additional deposits.
---
### Author:  [@Lax](https://tradingqna.com/u/Lax)
#### Post date: [February 9, 2018, 5:15am UTC](https://tradingqna.com/t/why-zerodha-is-not-allowing-to-buy-st-category-shares/26777/4 "2018-02-09T05:15:43Z")
Excess volatility is what market looks for and trader must be aware of risk. Zerodha is harming individual by blocking such shares. I know many company are making profit and are still in surveillance while those making huge loss are trading in regular session. Zerodha should let customer decide instead of blocking securities.