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We all know about "religious language wars". I'm not gonna fall for this one... Java GC does NOT take SECONDS. Maybe in the hundred millisecond range infrequently s is more like it, depending how you configure the runtime. The term "realtime" is a relative thing anyway... Oops, I...

Guys, come on, just admit it - for real-time equities/options trading systems nothing can beat C++. Use Java or Python is great for pilot systems, then code working system in C++. You beloved Java garbage collector will kill you with garbage collector cycles lasting seconds when load is...

Guys, come on, just admit it - for real-time equities/options trading systems noting can beat C++. Use Java or Python is great for pilot systems, then code working system in C++. You beloved Java garbage collector will kill you with garbage collector cycles lasting seconds when load is...

OK, a little exercise for you, tell me where the following print is the buyer (taking the offer) or the seller (hitting the bid), and describe how you see it (we are still talking about NYSE of course...): 50.10 x 50.11 1 x 1 50.09 x 50.10 1 x 1 1s50.10 50.09 x 50.09 1 x 1

I do apologize, but I have a single clue what you are talking about. Tell me how you test the stock and how you make a decision based on where it gets printed?

Lets' leave futures for gamblers... Back to my point. Specialists used to make money and still make money by seen/feeling the flow (personally, I do have respect them and their knowledge). How can we see and interpret what those guys are doing? I'm sorry guys, but you cannot read the...

I'm dying to have one of those!!!

Not true. Price moves into size. One side has to be more aggressive in order to move the price. And the specialist doesn't have to be on the other side. [B] Well, one shall remember that around 80% of all trades done by alogs these days. But when there is flow on the floor, the specialist...

I was trying to bump this thread :) [B] I see the presence of hidden orders. The specialist/floor broker have to show at least 1K on the bid/offer in order to put a reserve size, and you see trades (any size, even 1 lot) at the price with the size keep refreshing at 1K.

Well, I see every trade and every quote from NYSE, and my non-filtered, non-compressed feed is one of the best available (from ACTIV Financial). I do agree that unless you are in the slow market or a trade is marked as delayed, almost all trades are done through the HYBRID. But I see a lot of...

Well, you'll see the net change of those variables on the tape right away. Just watch for price and volume... I know you going to say that the tape reading is all encompassing :)

This makes sense if your strategy is to accumulate your line on the way down. Otherwise, good luck getting fills on limits orders on the way up :)

Guys, what's the whole deal about time priority of limit orders? I think it's over-engineering a strategy. Anyone care to explain when we have this conversation? What is the point? How can we benefit from this knowledge? In my tape reading strategy, I send a marketable limit order + $0.05 to...

National Best Bid and Offer - since RegNMS is in full force you should usually get your trades at NBBO.

...which is the action of price and volume in real-time. Tape Reading is the only reliable indicator, anything else too subjective and lagging...

Price and volume.

I'm pretty sure you can - when you submit a limit order, your buying power does not change until the order gets filled. Before any broker sends an order it check that account has enough equity, so all "under capitalized" orders will be rejected. [B] The same rule applies here. But if you...

Jesus, man, I've already asked you two times to state where in Rule 72 the floor brokers can step in front of customer orders and take the liquidity, so the net result would hurt the customers. All you do is keep telling me that I'm wrong. Best regards and thank you for your time.

Tape Reading is truly a lost art...

I often see specialist prints right before the price is about to change it's direction. The only problem is that those prints are often on the wrong side from my prospective... Of course specialists make mistakes more often these days when the flow is fragmented and 90% or so of all trades are...