Support Board
Date/Time: Tue, 28 Apr 2026 07:54:37 +0000
Post From: Trouble with Relative Volume
| [2026-04-27 21:39:50] |
| drinkcodejava - Posts: 36 |
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Hi Support, Like BenjFlame, I have also observed inconsistencies with the Relative Volume study. I have assembled a chartbook (attached) to show that it is not isolated to any one symbol or timeframe. I thank you in advance for a PHENOMENAL charting platform, and I am summarizing my observations here with the intent of contributing to the community & helping to characterize the problem: 1) The calculated values for Relative Volume (SG1) & Cumulative Volume Ratio (SG2) do not reflect expected values. I have chosen a couple outlier bars to illustrate this, but the calculations seem to be error-prone in general*: a) ESM26_FUT_CME 30min chart on 4/23/2026 at 13:30 EST has a Relative Volume value of 423.2% and Cumulative Volume Ratio of 122.6% when Period - Days To Include (In: 1) is set to 5. The volume for that 30m bar was approx 272K; the volume for the corresponding bar on the 5 previous calendar days were 39.2K, 126.4K, 41.3K, 0 (Sun 4/19) and 0 (Sat 4/18). The Cumulative Volume value from 09:30 through 13:30 were 1015K; prior days for same time period were 617.7K, 983.5K, 725.5K. Since the 0 values from Sat & Sun are excluded (In:7 set to 50), I would expect the Relative Volume to be 272K/(207K/3) = 393.9%, and the Cumulative Volume Ratio to be 1015K/(2327K/3) = 130.8%. b) For the AAPL 15m chart on 1/16/2026 at 09:30 EST, RV and CVR study values are both 208.2% when Period is set to 4. The volume for that 15m bar was approx 6.414M; prior day values were approx 2.448M, 2.318M, 2.778M and 3.322M. I would expect the RV and CVR to be 6.414M/(10.865M/4) = 236.1%. 2) When larger values for Period are used (e.g. >=10), some bars for SG1 & SG2 do not appear at all despite the existence of valid volume data. The number of missing bars increases as the input value is increased (e.g. 30, 45, 60). I have made sure that the chart has sufficient days of data for the averaging calculation. FWIW, according to the exported study data, these bars have a "0" value and occur at the same bar start time on a given chart and at regular intervals (i.e. some multiple of exactly 4 calendar days apart). For example, the missing bars for NYSE-TVOL are all at 09:30 EST on 12/03/2024, 12/11, 12/19, 12/23, etc; and the missing bars for AAPL are at 13:30 EST on 11/12/2025, 11/20, 11/24, 11/28, etc. The missing bars for ESM26_FUT_CME (continuous contract, date rollover, back adjusted) also occur at 09:30 EST. These bars have a "0" value regardless of the bar duration (1h, 30m, 10m, etc.), but some of them change to a non-zero value if the Period input is reduced to e.g. 5. Another observation I have made is that once the missing bars appear after changing to a small value, if the input is then increased to 30, the previously missing bars remain visible on applying the new larger input or on Recalculating the chart, but then they again disappear if the chart is Reloaded. * I have compiled a spreadsheet of the TVOL-NYSE Market Stats data and the Relative Volume study values from Nov 2024 through Jan 2026 to compare the study calculations with expected values, and I am seeing consistent discrepancies for both a 10 day and 30 day averaging period. I am more than happy to share it with you if you'd like. I understand it will take some time to address this. Thanks again for the great support, and please let me know if you would like any clarification or additional information. Hopefully I haven't initiated a wild goose chase, but the original post gives me some indication that others may be noticing similar problems. Date Time Of Last Edit: 2026-04-27 21:42:25
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 Relative Volume.Cht - Attached On 2026-04-27 21:29:10 UTC - Size: 13.19 KB - 0 views |