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Pre-Market Gap Scan OVERHAUL!

premarket movers gap scan for thinkorswim

I want to be sure I’m providing a really good value for what I do, and that I respond to feedback from my customers. To that end, I spent a lot of time doing a complete overhaul of the pre-market gap scan set for the Stock Hacker scanner in ThinkOrSwim. To be clear, the old set of scans worked great, and I use modified versions of them all the time.  But I wanted to make the scans even more powerful and full-featured so that they really do the best job they can possibly do. So today I’ve released the new version 2.0 gap scans, and EVERYONE who has purchased the scans in the past gets a free upgrade. You’ll notice the new links in your My Account > Orders > Order Details section automatically. Also, for those that haven’t purchased a copy yet, the scans are on sale this month here.

What’s New with the Pre-Market Gap Scan

First, there are a lot more of them, and all of them are more full-featured and easier to customize. They’re also more consistently setup, with cleaner code and comments.

Second, all the scans are set to find gaps greater than a certain percentage change, and you can now change that percentage to whatever you want for all of the scans!

Third, you’ll notice some new scans in both the pre-market group and the regular hours group. In the pre-market gap scan group, I’ve included a set of scans that finds what I call “insignificant” gaps, or gaps from the close, not from the high or low. Basically just a pre-market mover stock where there’s a gap between yesterday’s closing price and today’s opening price, even if that doesn’t take the open outside of yesterday’s range altogether.

Technically, a gap is any stock that OPENS higher than the previous day’s high, or lower than the previous day’s low. But if you run regular hours scans later in the day, the stocks might not all look like gaps because some of them have already filled the gap (i.e., even though a stock might have opened below yesterday’s low, today’s trading has moved the high so that it is now equal to or higher than the previous day’s low, for example, filling the a gap down). So one or two people got confused when my regular hours scans included these stocks that had later filled their gaps. I explained it to them, but I figured it would be even better to give everyone both options so you can weed out the ones that have already filled the gap, if you want to. So you’ll notice those scans below under “regular hours”.

All Version 2.0 Gap Scans Default to these Settings:

  • Last Price Between $5 – $200
  • Avg. Daily Volume > 500,000
  • Avg. True Range > .5
  • Gap >= 1%

All these settings can be adjusted and my comments inside the scan should help you do that if needed. Just use the drop-downs and input fields, or click the pencil icon next to any filter to change it. If you want to remove a filter altogether just click the X on the right hand side of the StockHacker window for that line of the scan. Be sure to save a new copy with a new name to apply the changes.

PRE-MARKET GAP SCAN – AFTER HOURS / EXTENDED HOURS SCANS

All Significant Gaps > X% From High Or Low
Significant Gaps Up > X% Above High
Significant Gaps Down > X% Below Low

All Tier 1 Significant Gaps > X% from High or Low
Tier 1 Significant Gaps Up > X% above High
Tier 1 Significant Gaps Down > X% below Low

All Gaps from Close (instead of hi/low) > X%
Gaps Down from Close (instead of low) > X%
Gaps Up from Close (instead of high) > X%

REGULAR TRADING HOURS SCANS

Gaps That Haven’t Filled Yet

All Significant Gaps (+ haven’t filled) > X%
Significant Gap Ups (+ haven’t filled) > X%
Significant Gap Downs (+ haven’t filled) > X%

All Tier 1 Gaps (+ haven’t filled) > X%
Tier 1 Gap Downs (+ haven’t filled) > X%
Tier 1 Gap Ups (+ haven’t filled) > X%

Gaps That May or May Not Have Filled

All Significant Gaps > X%
Significant Gap Ups > X%
Significant Gap Downs > X%

All Tier 1 Gaps > X%
Tier 1 Gap Downs > X%
Tier 1 Gap Ups > X%

Definitions

I always refer to gaps in terms of either being insignificant, significant, or tier 1. That’s just how I learned to think about them, but to translate my “trader speak,” here’s a quick definition of each:

  • Insignificant: A gap from the close, where the open has moved > X% from yesterday’s CLOSE, but where the stock may or may not be opening outside of yesterday’s range altogether. These are basically just a good, cleaned up list of pre-market movers, and this is the broadest type of gap scan you can do.
  • Significant: A gap from the high or low, where the open has moved > X% from yesterday’s HIGH or LOW, and thus the stock is opening completely outside of yesterday’s range. These are “true” gaps.
  • Tier 1: A significant gap in the opposite direction of yesterday’s price movement. So if yesterday was a green up bar, today is a significant gap below the low of yesterday. Or if yesterday was a red down bar, then today is a significant gap up over yesterday’s high. Basically the gap is negating all price movement from yesterday and “shocking” traders who wake up and see their positions suddenly in the red. There is a greater likelihood to see some panicked covering of positions at and near the open, and especially at any early retrace toward yesterday’s price where trapped traders will try to get out nearer to break-even.

Low Float Stocks

Just a quick note here: I know a lot of pre-market gap scan users also trade low float stocks. Low float stocks that gap in the morning can often create a real spike in price movement a make a trader a lot of quick profit if they’re on the right side of that price movement. But trading these setups used to be next to impossible to do within ThinkOrSwim, so most people had to pay for a standalone scanning service like Trade Ideas at god-awful subscription rates.

However, recently I came up with a workaround that has been doing well for TOS traders — I’ve painstakingly created 5 custom static lists of stocks, with floats less than 10 million, 20, 30, 40, and 50 million shares float each, and I have posted those for sale over here.

And it gets better. All the gap scans can be set up to run only on the low float lists, thus only returning low float gapping stocks. So now if you purchase both products in the shop area, you can not only scan for normal gaps, but also for the low float gaps so many people are looking for ways to find now.

Improvements

If you have any ideas for improvements to either the pre-market gap scan or the regular hours gap scan, I’m happy to hear them. Also, since this is a big release, I’m sure there might be a bug or two found during the first few weeks, so let me know if you spot anything weird.

CLICK HERE TO GET THE NEW SCANS

  

5 thoughts on “Pre-Market Gap Scan OVERHAUL!

  1. Hi, am looking at trade ideas ,and others .So…. is per-market scan the overhaul all in one, or are they two different scans ? and would it work with the low float scan , or low float scan list ?
    or any other lists?
    PRE -Market do you work for TOS ? would i get that free scan your mentor created ?
    is this come to me via e-mail or snail-mail ? Dave

    1. Hey David, thanks for stopping by. I’m Josiah, the owner here, and no I don’t work for TOS, I’m just a trader and thinkScript programmer from Nashville. The gap scan set is a group of several scans, all the individual scans mentioned above. They let you scan for a broad list of pre-market movers, or narrow down to a list of only the most extreme gaps for the day. They also let you develop the list either in the premarket or during the regular trading hours later in the day. The scans can work on any of TOS’s built in lists, any custom watchlist you have, and also on the low float lists I provide on the site. To get the free strategy you mentioned, just sign up with your email on the sidebar or at the top or bottom of the site, and you’ll get a coupon code instantly applied that makes that product free in our online store. It comes via email and it’s also saved in your online account here on the site. Hope that helps, and let me know if you have any other questions. Thanks again. -Josiah

    2. Hello I put my email in to get a free strategy and it does not give me a coupon code.

  2. Hi I was trying to get the free trading strategy. Didn’t get any code

    1. Hey David, so sorry about the trouble, I think there was a javascript issue that we had to fix. Thanks for bringing that to my attention. It should be working now, it just forwards you straight to the free checkout page. If not send me an email on the contact us page. Thanks!

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