Trailing Stop vs Trailing TP/SL on Bitunix: one opens a position after the reversal, the other closes it (worked BTC math)

Worked example first. BTCUSDT on Bitunix was trading at 81,151.7 this morning (Mark 81,138.0, Index 81,175.2, 24h range 80,889.0 to 82,034.2 at about 10:19 AM ET, per the screenshot). Say you want to buy a dip but only once the dip actually stops falling. You set a Trailing Stop long with an activation price of 79,000 and a 2% retracement.

• BTC drops to 79,000. The order activates. Nothing is bought yet.
• BTC keeps sliding to 77,500. The order tracks that new low.
• BTC bounces 2% off the low: 77,500 x 1.02 = 79,050. The system opens your long at market, around 79,050.

A plain limit buy at 79,000 would have filled 50 points cheaper, then sat through the slide to 77,500, which is about 1.9% underwater (roughly 19% of margin at 10x) before any bounce. The trailing order paid 50 points more in exchange for skipping that slide. That trade-off is the whole feature.

(Prices in the example are made up to show the mechanics. The live figures in the first line are real.)

The screenshot is the live BTCUSDT page with Trailing Stop picked in the order panel: an Activation Price box (prefilled at 81,085.3 USDT, with a Last toggle), a Callback Rate box with 5% and 10% presets, then Open Long and Open Short. Callback Rate is the field Bitunix's guide calls the retracement.

Q: Isn't a trailing stop an exit? On Bitunix there are two different tools with similar names, and mixing them up is the most common mistake:

• Trailing Stop is an ORDER TYPE in the order panel. It opens a new position after a reversal: long after a bounce off the low, short after a pullback off the high.
• Trailing TP/SL lives in the TP/SL menu of an existing position in the Positions section. It closes the position after price gives back a set amount from its best level.

Q: How does the short side work? Mirror image. Activation 83,000, retracement 1.5%. BTC runs through 83,000 to a peak of 84,600, then pulls back. The short opens at market once price falls 1.5% from the peak: 84,600 x 0.985 = 83,331.

Q: What if it never bounces? Then it never fires. If BTC activated at 79,000 and kept falling to 70,000 before the first 2% bounce, the long would open near 71,400. The order keeps chasing the low, so it protects you from catching the first knife, not from a long trend.

Q: Does it lock up margin while it waits? No. Bitunix says a Trailing Stop does not lock position or margin until it triggers. The flip side: if your available margin has been used elsewhere by then, the order can end as Trigger Failed. It only moves to Order History once it is Triggered, Trigger Failed, Canceled or System Canceled.

Q: Can I change leverage while it is waiting? No. While an active Trailing Stop exists, Bitunix blocks changes to leverage, margin mode and position mode on that contract. Set those first. Each Trailing Stop also counts toward your account's overall open-order limit, and its size cannot exceed the max order size per transaction.

Q: And the exit version? Trailing TP/SL from the Positions section: pick an activation price, a retracement and a quantity, and choose the Ratio or Interval trailing mode. Using Bitunix's own ETH setup (entry 1,938.30, activation 2,000, 5% retracement): if ETH ran to a hypothetical 2,150, the exit would trigger at 2,150 x 0.95 = 2,042.50, which is 104.20 per ETH or about 5.4% above entry, before fees and funding.

Q: Where would a 2% bounce trigger sit right now? If today's 24h lows on Bitunix were the post-activation lows, a 2% Trailing Stop long would fire at:

• BTC: low 80,889.0, trigger about 82,506.8 (last 81,151.7)
• ETH: low 2,359.02, trigger about 2,406.20 (last 2,388.77)
• SOL: low 102.97, trigger about 105.03 (last 103.91)
• XRP: low 1.2944, trigger about 1.3203 (last 1.3068)
• DOGE: low 0.07782, trigger about 0.07938 (last 0.07927)

Same percentage, very different distance in price, so size the retracement to each coin's normal swing rather than copying one number across the board.

Two cautions that apply to both versions: the trigger sends a market order, so in a fast or thin book the fill can land away from the computed level, and funding keeps running while you hold (BTC funding was 0.0092% on the 8h clock at capture).

Try it on paper first: pick a coin, write down an activation price, a retracement and the size before you open the order panel. If you cannot say what a 2% move costs you in USDT at your leverage, the retracement is too tight or the size too big.