Stop Loss in system and flash fall

Tick Analysis of Nifty

Curious upon seeing me Stoploss order got jumped over During the flash fall yesterday i analysed the data from 2 Brokers (Indiabulls and Sharekhan)

Analysis is as under
Sharekhan

13-Apr-12 13:56:56 237050 5247 5247 5247 5247 5307.93
13-Apr-12 13:56:52 304650 5260.1 5260.1 5260.1 5260.1 5309.46
13-Apr-12 13:56:47 80600 5274.5 5274.5 5274.5 5274.5 5310.96
13-Apr-12 13:56:44 4900 5280.55 5280.55 5280.55 5280.55 5311.27

IndiaBulls

04/13/2012 135644 5280.55 4900
04/13/2012 135648 5274.5 80600
04/13/2012 135652 5260.1 304650
04/13/2012 135656 5247 237050

This Clearly show that most of the stoploss orders at the crucial point (5270.xx) (Trend change Point ) were not filled
Now question is what do we make out of this does this mean that advance algorithems are really keeping general public at Bay

Regards

Tick Analysis of Nifty

Curious upon seeing me Stoploss order got jumped over During the flash fall yesterday i analysed the data from 2 Brokers (Indiabulls and Sharekhan)

Analysis is as under
Sharekhan

13-Apr-12 13:56:56 237050 5247 5247 5247 5247 5307.93
13-Apr-12 13:56:52 304650 5260.1 5260.1 5260.1 5260.1 5309.46
13-Apr-12 13:56:47 80600 5274.5 5274.5 5274.5 5274.5 5310.96
13-Apr-12 13:56:44 4900 5280.55 5280.55 5280.55 5280.55 5311.27

IndiaBulls

04/13/2012 135644 5280.55 4900
04/13/2012 135648 5274.5 80600
04/13/2012 135652 5260.1 304650
04/13/2012 135656 5247 237050

This Clearly show that most of the stoploss orders at the crucial point (5270.xx) (Trend change Point ) were not filled
Now question is what do we make out of this does this mean that advance algorithems are really keeping general public at Bay

Regards

To add insult to injury... think of someone who might have kept stop loss- market in the system at 5270 and his trade getting executed at 5210...

perhaps, this should give you a better picture, if not the real one.
Now, regarding filling or jumping the precise SL orders depends on the type of SL placed ie SL-L or SL-M.
Most of the people place SL-M orders to get out of trade instantly and that precisely explains why it fell of so fast from the levels of 5270s to 5260s to 5250s and so on...
But what one should think is who was sitting beforehand to catch the falling angel?

I had a SL in place with trigger price at 5279...but it never triggered!

Stop-Loss Book
Stop Loss orders are stored in this book till the trigger price specified in the order is reached or surpassed. When the trigger price is reached or surpassed, the order is released in the Regular lot book.
The stop loss condition is met under the following circumstances:
Sell order - A sell order in the Stop Loss book gets triggered when the last traded price in the normal market reaches or falls below the trigger price of the order.
Buy order - A buy order in the Stop Loss book gets triggered when the last traded price in the normal market reaches or exceeds the trigger price of the order.