What are folks doing with US 5-year note (situation is similar with 2- and 10- year) right now, I rolled to hold June (March contract is past first notice) but there's no liquidity for September, how do you compute carry?
I just checked I already have 17 EOD prices for each of the June ZF and ZT in my database (downloaded automatically daily), maybe there's no liquidity, but there's still somehow an EOD price coming from IB (every contract should have an official closing price I guess?), also, I'm smoothing carry signal, so in any case I need longer time series to do it than usually available form the current pair, so the system stitches together older pairs of price-carry contracts from the previous periods when there's not enough data in the current pair and then computes the signal on that longer historical time-series which only ends with the latest pair..
The September contract for US5 (ZF) does have historical data. There have been trades in the past. However, from Feb 18th (or earlier) until today there have been no trades in this September contract. So any price data on this contract is stale. You would not be able to use that for a carry trading rule.
To calculate carry you need matching prices in the two contracts. Do these have to be trades? Not neccessarily. In fact it might be worse, if for example you took the last trade in two contracts; but one of those trades occured just before the close, and the other in an illiquid contract.
I use quoted prices at the close. What if a contract isn't trading? There will nearly always be a quote at the close. Usuually this will be 'marked to model'. The spread will therefore be accurate even if no trades have actually taken place.
Here for example are the prices I have for Sep and June:
Code:
Sep
2020-02-26 23:00:00 121.703125 27467
2020-02-27 23:00:00 121.796875 27475
2020-02-28 23:00:00 122.750000 27483
June
2020-02-26 18:22:18 121.566406 27456
2020-02-26 23:00:00 121.585938 27457
2020-02-27 14:06:55 121.933594 27460
2020-02-27 15:16:28 122.042969 27461
2020-02-27 16:24:20 121.886719 27462
2020-02-27 17:24:45 121.792969 27463
2020-02-27 18:25:10 121.753906 27464
2020-02-27 23:00:00 121.937500 27465
2020-02-28 14:20:03 122.503906 27468
2020-02-28 15:27:17 122.550781 27469
2020-02-28 16:36:04 122.558594 27470
2020-02-28 17:36:28 122.535156 27471
2020-02-28 18:36:59 122.597656 27472
2020-02-28 23:00:00 122.570312 27473
2020-03-02 14:10:54 123.050781 27476
2020-03-02 15:11:19 123.207031 27477
2020-03-02 16:11:33 123.121094 27478
2020-03-02 17:12:11 123.003906 27479
2020-03-02 18:12:24 122.996094 27480
2020-03-02 23:00:00 122.601562 27481
23:00 is the pseudo timestamp for a closing price. I don't sample the forward contract intraday. There are matched prices for 26,27,28 February.
Sometimes the quote is stale and there is a jump in the carry signal. Big deal. Because I'm trading carry with a smooth that doesn't impact the signal so much. Sometimes you don't even get a quote, like for yesterday. Big deal. At the extreme end, as long as I got a pair of matched prices every time I rolled (the minimum required for the backadjustment to work) I could calculate carry.
If you want to get very anal about this and say you won't use carry at all then I respect your decision, but there is no evidence that having a 'poorer quality' carry signal leads to poorer Sharpe; quite the opposite since the problem is endemic in bond futures which have very high carry returns (could be Beta... see below), whereas in commodities with long series of traded contracts carry doesn't work so well.
We're trying to forecast roughly what a price is doing based on an imperfect indicator. We're not doing cash-futures arbitrage. We're not trading the Jun-Sep spread. We don't have to be anal about this.
Carry is different for different futures, right? For bond futures, you can get the "spot futures price" by using the CTD bond and it's conversion factor. The difference between the futures price and this "implied spot" scaled by time to expiration is your carry (a.k.a. implied repo).
Correct, but this is a pain that needs quite a bit more data (at AHL we used to use the underlying govvie interest rate curve to calculate carry
I don't use the carry rule, because of this very reason. Others use the carry rule only for those instruments for which future contracts are available. So they set a parameter for each instrument to indicate whether the carry rule should be used or not.
Others, like me, use the carry rule on every single instrument

In my experience, the carry factor has a higher beta to the stock markets than momentum, so it is less effective as a diversifier if you are including the strategy as part of a balanced portfolio of long-only equity indicies and systematic strategy. When markets go into risk-off mode (e.g. during a market crash), carry factor also suffers. On the other hand, during a crisis, the momentum factor tends to do well so it could be better at offsetting stocks.
For this reason, personally I only use the momentum factor without the carry in the systematic portion of my portfolio.
That's a perfectly valid stance to take. Just bear in mind one point: do you calculate momentum based on a total return series? (like a back adjusted futures price series) Then you will have an implicit allocation to carry and the carry factor. So I would be surprised if removing it had a huge effect. I don't optimise in the presence of my long only portfolio so I haven't checked this myself. My long only has a momentum overlay anyway so I'm more likely to want a bit less momentum.
(This also means that if you have carry and total return momentum, your allocation to carry is higher than you think)
GAT
