Trading on the BOLT System is conducted from Monday to Friday between 9:15 a.m.
and 3:30 p.m. normally. Refer Notice No. 20101014-8 for call auction.
The scrips traded on BSE have been classified into various groups.
BSE has, for the guidance and benefit of the investors, classified
the scrips in the Equity Segment into 'A', 'B', 'T'
and 'Z' groups on certain qualitative and quantitative parameters.
Criteria for "A" Group Companies
The "F" Group represents the Fixed Income Securities.
The "T" Group represents scrips which are settled on a trade-to-trade basis as a
Trading in Government Securities by the retail investors is done under the "G"
The 'Z' group was introduced by BSE in July 1999 and includes companies which
have failed to comply with its listing requirements and/or have failed to
resolve investor complaints and/or have not made the required arrangements with
both the depositories, viz., Central Depository Services (I) Ltd. (CDSL) and
National Securities Depository Ltd. (NSDL) for dematerialization of their
BSE also provides a facility to the market participants for on-line trading of
odd-lot securities in physical form in 'A', 'B', 'T' and 'Z' groups and in
rights renunciations in all groups of scrips in the Equity Segment.
With effect from December 31, 2001, trading in all securities listed in the
Equity segment takes place in one market segment, viz., Compulsory Rolling
Settlement Segment (CRS).
The scrips of companies which are in demat can be traded in market lot of 1.
However, the securities of companies which are still in the physical form are
traded in the market lot of generally either 50 or 100. Investors having
quantities of securities less than the market lot are required to sell them as
"Odd Lots". This facility offers an exit route to investors to dispose of their
odd lots of securities, and also provides them an opportunity to consolidate
their securities into market lots.
This facility of selling physical shares in compulsory demat scrips is called an
Exit Route Scheme. This facility can also be used by small investors for selling
up to 500 shares in physical form in respect of scrips of companies where trades
are required to be compulsorily settled by all investors in demat mode.
The securities of companies, which have signed the Listing Agreement with BSE,
are traded as "Listed Securities". Almost all scrips traded in the Equity
segment fall in this category.
To facilitate the market participants to trade in securities of such companies,
which are actively traded at other stock exchanges but are not listed on BSE,
trading in such securities is facilitated as " Permitted Securities" provided
they meet the relevant norms specified by BSE
Tick size is the minimum difference in rates between two orders on the same side
i.e., buy or sell, entered in the system for particular scrip. Trading in scrips
listed on BSE is done with the tick size of 5 paise.
However, in order to increase the liquidity and enable the market participants
to put orders at finer rates, BSE has reduced the tick size from 5 paise to 1
paise in case of units of mutual funds, securities traded in "F" group and
equity shares having closing price up to Rs. 15 on the last trading day of the
calendar month. Accordingly, the tick size in various scrips quoting up to Rs.15
is revised to 1 paise on the first trading day of month. The tick size so
revised on the first trading day of month remains unchanged during the month
even if the price of scrips undergoes a change.
Computation Of Closing Price Of Scrips
The closing price of scrips is computed by BSE on the basis of weighted average
price of all trades executed during the last 30 minutes of a continuous trading
session. However, if there is no trade recorded during the last 30 minutes, then
the last traded price of scrip in the continuous trading session is taken as the
official closing price.
Basket Trading System
BSE has commenced trading in the Derivatives Segment with effect from June 9,
2000 to enable investors to hedge their risks. Initially, the facility of
trading in the Derivatives Segment was confined to Index Futures. Subsequently,
BSE has introduced the Index Options and Options & Futures in select individual
Investors in the cash market had felt a need to limit their risk exposure in the
market to the movement in S&P BSE SENSEX. With a view to provide investors the facility
of creating S&P BSE SENSEX-linked portfolios and also to create a linkage of market
prices of the underlying securities of S&P BSE SENSEX in the Cash Segment and Futures on
S&P BSE SENSEX, BSE has provided to the investors as well as to its Members a facility
of Basket Trading System on BOLT with effect from August 14, 2000. In the Basket
Trading System, the investors through the Members are able to buy/ sell all 30
scrips of S&P BSE SENSEX in one go in the proportion of their respective weights in the
S&P BSE SENSEX. The investors need not calculate the quantity of S&P BSE SENSEX scrips to be
bought or sold for creating S&P BSE SENSEX-linked portfolios and this function is
performed by the system. The investors can also create their own baskets by
deleting certain scrips from 30 scrips in the S&P BSE SENSEX. Further, the investors can
alter the weights of securities in such profiled baskets and enter their own
weights. The investors can also select less than 100% weightage to reduce the
value of the basket as per their own requirements.
To participate in this system, the Members need to indicate the number of S&P BSE SENSEX
basket(s) to be bought or sold, where the value of one S&P BSE SENSEX basket is arrived
at by the system by multiplying Rs.50 to the prevailing S&P BSE SENSEX. For example, if
the S&P BSE SENSEX is 15,000, the value of one basket of S&P BSE SENSEX would be 15000 x 50=
i.e., Rs. 7,50,000/-. The investors can also place orders by entering value of
S&P BSE SENSEX portfolio to be brought or sold with a minimum value of Rs. 50,000 for
The Basket Trading System provides the arbitrageurs an opportunity to take
advantage of price differences in the underlying S&P BSE SENSEX and Futures on the
S&P BSE SENSEX by simultaneous buying and selling of baskets comprising the S&P BSE SENSEX
scrips in the Cash Segment and S&P BSE SENSEX Futures. This would provide a balancing
impact on the prices in both cash and futures markets.
The Basket Trading System thus meets the need of investors and also improves the
depth in cash and futures markets.
The trades executed under the Basket Trading System are subject to intra-day
trading and gross exposure limits available to the Members. The VaR, MTM margins
etc, as are applicable to normal trades in the Cash Segment, are also recovered
from the Members.