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限价订单匹配后出现部分填充与幽灵订单

2026-06-15 · Polymarket · 22 条相关讨论

The Dude 2026-06-15 04:09:59

I got a bug where some taker made a trade that was matched with other makers and me. User websocket said that size_matched was 150.0, but on-chain, only 82 was matched out of my order's 150, how's that possible? That order did not get filled previously of course, it is its first and only fill.

I got a bug where some taker made a trade that was matched with other makers and me. User websocket said that size_matched was 150.0, but on-chain, only 82 was matched out of my order's 150, how's that possible? That order did not get filled previously of course, it is its first and only fill.

Bobcoi03 2026-06-15 04:13:13

ghost fills i think

ghost fills i think

The Dude 2026-06-15 04:13:39

It's on soccer pre-match, idk why somebody would do ghost fill there

It's on soccer pre-match, idk why somebody would do ghost fill there

The Dude 2026-06-15 04:39:02

Possibly, but I shouldn't receive a 150 size_matched notification via user WS if i'm filled 82

Possibly, but I shouldn't receive a 150 size_matched notification via user WS if i'm filled 82

Aemond Targaryen 2026-06-15 04:40:06

It always shows the size matched, which may be more than your resting size if the trade took down multiple makers

It always shows the size matched, which may be more than your resting size if the trade took down multiple makers

The Dude 2026-06-15 04:40:29

No it shows the size_matched for my maker order, not the size_matched of the taker order

No it shows the size_matched for my maker order, not the size_matched of the taker order

The Dude 2026-06-15 04:40:34

Else it's useless

Else it's useless

The Dude 2026-06-15 08:36:02

Nope, might be what glock is talking about, but still weird to be matched 150 and be filled 82

Nope, might be what glock is talking about, but still weird to be matched 150 and be filled 82

parameter 2026-06-15 08:48:03

turns out, after some research I did last night, you can buy something and then sell it twice to revert the tx

turns out, after some research I did last night, you can buy something and then sell it twice to revert the tx

parameter 2026-06-15 08:48:19

I think bots are either doing it unintentionally or there is some kind of clob order state issue

I think bots are either doing it unintentionally or there is some kind of clob order state issue

Vivino 2026-06-15 08:48:45

What do you mean sell it twice ?

What do you mean sell it twice ?

parameter 2026-06-15 08:49:14

You have X tokens. You manage to get two sells on the book for X tokens. The first one sells. The second one tries to and underflows the contract math.

You have X tokens. You manage to get two sells on the book for X tokens. The first one sells. The second one tries to and underflows the contract math.

parameter 2026-06-15 08:49:47

I didn't actually try to do it but I'm pretty sure that is what's happening to me. And it happens a lot.

I didn't actually try to do it but I'm pretty sure that is what's happening to me. And it happens a lot.

parameter 2026-06-15 08:51:14

Yeah.. well it's happening on BTC if I understand it right and if it's because of an accidental overcommit by a bot then it could happen anywhere.

Yeah.. well it's happening on BTC if I understand it right and if it's because of an accidental overcommit by a bot then it could happen anywhere.

Vivino 2026-06-15 08:52:01

So what’s the consequence of this for you ?

So what’s the consequence of this for you ?

Vivino 2026-06-15 08:53:13

Or you think some people can exploit it, for rewards maximization for example

Or you think some people can exploit it, for rewards maximization for example

parameter 2026-06-15 08:53:48

So in my case I buy / buy with limit orders a lot. One buy goes through and the other buy does not.

So in my case I buy / buy with limit orders a lot. One buy goes through and the other buy does not.

parameter 2026-06-15 08:53:53

Then I wind up unhedged and eat it.

Then I wind up unhedged and eat it.