# Specific update_frequency for every series, plus yearly

October 2026 · API

update_frequency in the API catalog no longer reads irregular. Each series that used to reports its real rhythm, and the list gains the yearly value.

## What's new

`update_frequency` in the API catalog now reports a specific rhythm for every series that used to read `irregular`. The new value `yearly` joins the list, after `quarterly`.

- `daily`: company Bitcoin treasury holdings (BTC and USD), `yearly_candles`, `btc_yearly_performance`, `treasuries_top_ten`, `lightning_network_capacity`, `lightning_channel_count`
- `weekday`: `grayscale_holdings_btc`, `grayscale_holdings_usd`
- `monthly`: `btc_us_cpi_yoy_correlation`, `btc_case_shiller_correlation`
- `yearly`: `federal_deficit_usd`, `federal_interest_payments_usd`
- `manual`: `m2_10w_lead`

## Methodology

Company treasury holdings carry one point a day, held at the last reported amount between purchases and sales.

The yearly candle and yearly performance series hold one point per year. The current year's value refreshes daily, so they report `daily`.

Grayscale holdings publish weekday points only, and some days are skipped.

[API documentation](https://docs.newhedge.io/api)