bbg-fetch 2.0.0

Python functionality for getting different data from Bloomberg: prices, implied vols, fundamentals

bbg-fetch

Bloomberg data in DataFrames. No boilerplate. No bloat.

bbg-fetch gives you clean, production-ready functions for the Bloomberg data you actually need — prices, fundamentals, vol surfaces, futures curves, bond analytics, index constituents — without writing event loops or managing sessions.

from bbg_fetch import fetch_field_timeseries_per_tickers

prices = fetch_field_timeseries_per_tickers(
    tickers={'ES1 Index': 'SPX', 'TY1 Comdty': '10yUST'},
    field='PX_LAST',
    start_date=pd.Timestamp('2020-01-01')
)
# Returns a clean DataFrame with renamed columns, sorted index, split/div adjusted

---

Why bbg-fetch?

vs. raw blpapi

Writing Bloomberg queries with blpapi directly means 40–60 lines of session management, request construction, event-loop iteration, and response parsing — for every single query. You end up writing the same boilerplate wrapper in every project.

With blpapi:

import blpapi

opts = blpapi.SessionOptions()
opts.setServerHost('localhost')
opts.setServerPort(8194)
session = blpapi.Session(opts)
session.start()
session.openService('//blp/refdata')
service = session.getService('//blp/refdata')
request = service.createRequest('HistoricalDataRequest')
request.getElement('securities').appendValue('AAPL US Equity')
request.getElement('fields').appendValue('PX_LAST')
request.set('startDate', '20200101')
request.set('endDate', '20241231')
request.set('adjustmentNormal', True)
request.set('adjustmentAbnormal', True)
request.set('adjustmentSplit', True)
session.sendRequest(request)
# ... then 30 more lines to parse the event loop into a DataFrame

With bbg-fetch:

from bbg_fetch import fetch_field_timeseries_per_tickers

prices = fetch_field_timeseries_per_tickers(
    tickers=['AAPL US Equity'],
    field='PX_LAST',
    start_date=pd.Timestamp('2020-01-01')
)

Same result. One line.

vs. xbbg

xbbg is a capable library, but its v1 rewrite introduced a Rust core, narwhals, and pyarrow>=22 as hard dependencies — over 30MB of transitive installs for what most quant teams use: bdp, bdh, and bds.

	bbg-fetch	xbbg v1
Dependencies	numpy + pandas	narwhals + pyarrow + Rust binary
Install size	~50KB (plus blpapi)	~30MB+ transitive
Python support	3.9–3.12	3.10–3.14
Intraday bars / streaming	No	Yes
Exchange-aware market hours	No	Yes
Session management	Automatic singleton	Configurable pool
Debug Bloomberg errors	Your code, 400 lines	Third-party internals

bbg-fetch is for teams that need historical, reference, and bulk data — reliably, with minimal dependencies. If you need intraday bars or real-time streaming, use xbbg.

The sweet spot

bbg-fetch sits between raw blpapi (too low-level) and xbbg (too many dependencies). It wraps the three Bloomberg services that cover 95% of quant workflows — BDP, BDH, BDS — into high-level functions that return clean DataFrames with proper column naming, corporate action adjustments, and index alignment.

---

What you get

Multi-asset coverage

• Equities: Historical prices with split/dividend adjustments, fundamentals, dividend history
• Futures: Contract tables with carry analysis, active contract series, roll handling
• Options: Implied volatility surfaces (moneyness and delta), option chains
• Fixed Income: Bond pricing and analytics by ISIN, yield curves, CDS spreads
• FX: Currency rates and volatility
• Indices: Constituent weights, ISIN-to-ticker resolution

Production-ready details

• Dict-based ticker renaming: {'ES1 Index': 'SPX'} → DataFrame columns named SPX
• Automatic retry on Bloomberg connection flakes
• Corporate action adjustments on by default (normal, abnormal, splits)
• Predefined field mappings for vol surfaces (30d/60d/3m/6m/12m moneyness, delta)
• Carry computation built into futures contract tables

---

Installation

1. Install blpapi

pip install --index-url=https://blpapi.bloomberg.com/repository/releases/python/simple blpapi

Pre-built wheels for Python 3.8–3.12 on Windows/macOS/Linux bundle the C++ SDK automatically.

Corporate proxy? Download the .whl from https://blpapi.bloomberg.com/repository/releases/python/simple/blpapi/ via browser, then:

pip install /path/to/blpapi-3.24.6-cp312-cp312-win_amd64.whl

2. Install bbg-fetch

pip install bbg-fetch

Or from source:

git clone https://github.com/ArturSepp/BloombergFetch.git
pip install .

Requirements: Python 3.9+, Bloomberg Terminal running on the same machine.

---

Examples

Prices across tickers (with renaming)

import pandas as pd
from bbg_fetch import fetch_field_timeseries_per_tickers

# Pass a dict to auto-rename columns: Bloomberg ticker → your label
prices = fetch_field_timeseries_per_tickers(
    tickers={'ES1 Index': 'SPX', 'TY1 Comdty': '10yUST', 'GC1 Comdty': 'Gold'},
    field='PX_LAST',
    start_date=pd.Timestamp('2015-01-01')
)
# DataFrame with columns ['SPX', '10yUST', 'Gold'], DatetimeIndex, sorted, adjusted

# Or pass a list — column names stay as Bloomberg tickers
prices = fetch_field_timeseries_per_tickers(
    tickers=['AAPL US Equity', 'MSFT US Equity'],
    field='PX_LAST',
    start_date=pd.Timestamp('2020-01-01')
)

# Unadjusted prices (for futures, rates, etc.)
raw = fetch_field_timeseries_per_tickers(
    tickers=['TY1 Comdty'], field='PX_LAST',
    CshAdjNormal=False, CshAdjAbnormal=False, CapChg=False
)

Multiple fields for a single ticker

from bbg_fetch import fetch_fields_timeseries_per_ticker

# OHLC data
ohlc = fetch_fields_timeseries_per_ticker(
    ticker='AAPL US Equity',
    fields=['PX_OPEN', 'PX_HIGH', 'PX_LOW', 'PX_LAST'],
    start_date=pd.Timestamp('2023-01-01')
)

# Futures-specific fields
fut_data = fetch_fields_timeseries_per_ticker(
    ticker='ES1 Index',
    fields=['PX_LAST', 'FUT_DAYS_EXP'],
    CshAdjNormal=False, CshAdjAbnormal=False, CapChg=False
)

Company fundamentals

from bbg_fetch import fetch_fundamentals

# Basic security info
info = fetch_fundamentals(
    tickers=['AAPL US Equity', 'GOOGL US Equity'],
    fields=['security_name', 'gics_sector_name', 'crncy', 'market_cap']
)

# Fund-level data
fund_info = fetch_fundamentals(
    tickers=['HAHYIM2 HK Equity'],
    fields=['name', 'front_load', 'back_load', 'fund_mgr_stated_fee', 'fund_min_invest']
)

# Dict-based renaming works for both tickers and fields
info = fetch_fundamentals(
    tickers={'AAPL US Equity': 'Apple', 'MSFT US Equity': 'Microsoft'},
    fields={'security_name': 'Name', 'gics_sector_name': 'Sector'}
)

Balance sheet and credit metrics

from bbg_fetch import fetch_balance_data

credit = fetch_balance_data(
    tickers=['ABI BB Equity', 'T US Equity', 'JPM US Equity'],
    fields=('GICS_SECTOR_NAME', 'TOT_COMMON_EQY', 'BS_LT_BORROW',
            'NET_DEBT_TO_EBITDA', 'INTEREST_COVERAGE_RATIO',
            'FREE_CASH_FLOW_MARGIN', 'EARN_YLD')
)

Current market prices

from bbg_fetch import fetch_last_prices
from bbg_fetch.core import FX_DICT

# FX rates (uses built-in FX_DICT by default: 19 major pairs)
fx = fetch_last_prices()

# Custom tickers
prices = fetch_last_prices(tickers=['AAPL US Equity', 'SPX Index', 'USGG10YR Index'])

# With renaming
prices = fetch_last_prices(
    tickers={'ES1 Index': 'SPX Fut', 'TY1 Comdty': '10y Fut', 'GC1 Comdty': 'Gold Fut'}
)

Implied volatility surface

from bbg_fetch import fetch_vol_timeseries, IMPVOL_FIELDS_DELTA
from bbg_fetch.core import (IMPVOL_FIELDS_MNY_30DAY, IMPVOL_FIELDS_MNY_60DAY,
                             IMPVOL_FIELDS_MNY_3MTH, IMPVOL_FIELDS_MNY_6MTH,
                             IMPVOL_FIELDS_MNY_12M)

# Delta-based vol for FX (1M and 2M, 10Δ to 50Δ puts and calls)
fx_vol = fetch_vol_timeseries(
    ticker='EURUSD Curncy',
    vol_fields=IMPVOL_FIELDS_DELTA,
    start_date=pd.Timestamp('2023-01-01')
)
# Returns: spot_price, div_yield, rf_rate + all vol columns

# Full moneyness surface across 5 tenors (30d, 60d, 3m, 6m, 12m × 9 strikes)
eq_vol = fetch_vol_timeseries(
    ticker='SPX Index',
    vol_fields=[IMPVOL_FIELDS_MNY_30DAY, IMPVOL_FIELDS_MNY_60DAY,
                IMPVOL_FIELDS_MNY_3MTH, IMPVOL_FIELDS_MNY_6MTH,
                IMPVOL_FIELDS_MNY_12M],
    start_date=pd.Timestamp('2010-01-01')
)

# Single tenor with raw field names (no renaming)
vol_30d = fetch_vol_timeseries(
    ticker='SPX Index',
    vol_fields=['30DAY_IMPVOL_100.0%MNY_DF', '30DAY_IMPVOL_90.0%MNY_DF'],
    start_date=pd.Timestamp('2020-01-01')
)

Futures contract table with carry

from bbg_fetch import fetch_futures_contract_table

# Full contract table: prices, bid/ask, volume, OI, days to expiry, annualized carry
curve = fetch_futures_contract_table(ticker="ES1 Index")

# Nikkei futures
nk_curve = fetch_futures_contract_table(ticker="NK1 Index")

Active futures price series

from bbg_fetch import fetch_active_futures

# Front and second month continuous series
front, second = fetch_active_futures(generic_ticker='ES1 Index')

# Start from second generic (e.g., for roll analysis)
gen2, gen3 = fetch_active_futures(generic_ticker='ES1 Index', first_gen=2)

Futures ticker utilities

from bbg_fetch import instrument_to_active_ticker, contract_to_instrument

# ES1 Index → ES
instrument_to_active_ticker('ES1 Index', num=3)   # → 'ES3 Index'
contract_to_instrument('ES1 Index')                 # → 'ES'
contract_to_instrument('TY1 Comdty')                # → 'TY'

Bond analytics by ISIN

from bbg_fetch import fetch_bonds_info

bond_data = fetch_bonds_info(
    isins=['US03522AAJ97', 'US126650CZ11'],
    fields=['id_bb', 'name', 'security_des', 'crncy', 'amt_outstanding',
            'px_last', 'yas_bond_yld', 'yas_oas_sprd', 'yas_mod_dur']
)

# With historical override
bond_hist = fetch_bonds_info(
    isins=['US03522AAJ97'],
    fields=['px_last', 'yas_bond_yld'],
    END_DATE_OVERRIDE='20231231'
)

CDS spreads

from bbg_fetch import fetch_cds_info

cds = fetch_cds_info(
    equity_tickers=['ABI BB Equity', 'CVS US Equity', 'JPM US Equity'],
    field='cds_spread_ticker_5y'
)

Bond ISIN → issuer equity ISIN mapping

from bbg_fetch import fetch_issuer_isins_from_bond_isins

# Map bond ISINs to their issuer's equity ISIN
issuer_map = fetch_issuer_isins_from_bond_isins(
    bond_isins=['XS3034073836', 'USY0616GAA14', 'XS3023923314']
)
# Returns: pd.Series with bond ISIN as index, issuer equity ISIN as values

Dividend history and yields

from bbg_fetch import fetch_dividend_history, fetch_div_yields

# Full dividend history
divs = fetch_dividend_history(ticker='AAPL US Equity')
# Columns: declared_date, ex_date, record_date, payable_date,
#          dividend_amount, dividend_frequency, dividend_type

# Trailing 1-year dividend yield for multiple tickers
div_amounts, div_yields_1y = fetch_div_yields(
    tickers=['AHYG SP Equity', 'TIP US Equity'],
    dividend_types=('Income', 'Distribution')
)

# With renaming
div_amounts, div_yields_1y = fetch_div_yields(
    tickers={'TIP US Equity': 'TIPS', 'SDHA LN Equity': 'Asia HY'}
)

Index members and weights

from bbg_fetch import fetch_index_members_weights, fetch_bonds_info

# Index with weights (INDX_MWEIGHT)
members = fetch_index_members_weights('SPCPGN Index')

# Index members only (some indices don't have weights)
members = fetch_index_members_weights('H04064US Index', field='INDX_MEMBERS')

# Historical members
members_hist = fetch_index_members_weights(
    'I31415US Index', END_DATE_OVERRIDE='20200101'
)

# Chain: get index members → fetch bond analytics
members = fetch_index_members_weights('LUACTRUU Index')
bond_data = fetch_bonds_info(
    isins=members.index.to_list(),
    fields=['name', 'px_last', 'yas_bond_yld', 'yas_mod_dur', 'bb_composite']
)

ISIN to Bloomberg ticker resolution

from bbg_fetch import fetch_tickers_from_isins

# Convert ISINs to Bloomberg composite tickers
tickers = fetch_tickers_from_isins(isins=['US88160R1014', 'IL0065100930'])
# Returns: ['TSLA US Equity', ...] (with primary exchange)

Direct BDP / BDH / BDS

For ad-hoc queries not covered by the high-level functions:

from bbg_fetch import bdp, bdh, bds

# Reference data (BDP)
ref = bdp('AAPL US Equity', ['Security_Name', 'GICS_Sector_Name', 'PX_LAST'])

# Historical data with adjustments (BDH)
hist = bdh('SPX Index', 'PX_LAST', '2024-01-01', '2024-12-31',
           CshAdjNormal=True, CshAdjAbnormal=True, CapChg=True)

# Bulk data — option chains (BDS)
chain = bds('TSLA US Equity', 'CHAIN_TICKERS',
            CHAIN_PUT_CALL_TYPE_OVRD='PUT', CHAIN_POINTS_OVRD=1000)

# Yield curve construction
yc_members = bds("YCGT0025 Index", "INDX_MEMBERS")
yc_data = bdp(yc_members.member_ticker_and_exchange_code.tolist(),
              ['YLD_YTM_ASK', 'SECURITY NAME', 'MATURITY'])

# Clean up session explicitly (optional)
from bbg_fetch import disconnect
disconnect()

---

Function reference

Price data

Function	Description
fetch_field_timeseries_per_tickers()	One field across multiple tickers (with optional dict-based renaming)
fetch_fields_timeseries_per_ticker()	Multiple fields for a single ticker
fetch_last_prices()	Snapshot of current prices

Fundamentals

Function	Description
fetch_fundamentals()	Company metadata and fundamentals (dict renaming for tickers and fields)
fetch_balance_data()	Balance sheet ratios and credit metrics
fetch_dividend_history()	Full dividend history (dates, amounts, types)
fetch_div_yields()	Per-ticker dividend amounts and trailing 1-year yield

Derivatives

Function	Description
fetch_vol_timeseries()	Implied vol surface with underlying + rates (supports list-of-dicts for multi-tenor)
fetch_futures_contract_table()	Contract specs, carry, timestamps
fetch_active_futures()	Front + second month price series

Fixed income

Function	Description
fetch_bonds_info()	Bond analytics by ISIN (with optional date override)
fetch_cds_info()	CDS spread tickers from equity tickers
fetch_issuer_isins_from_bond_isins()	Bond ISIN → issuer equity ISIN mapping

Index and resolution

Function	Description
fetch_index_members_weights()	Constituents and weights (configurable BDS field)
fetch_tickers_from_isins()	ISIN → Bloomberg composite ticker

Futures utilities

Function	Description
instrument_to_active_ticker()	'ES1 Index' + num=3 → 'ES3 Index'
contract_to_instrument()	'ES1 Index' → 'ES' (strip generic number)

Low-level blpapi wrappers

Function	Description
bdp()	Bloomberg Data Point — reference data (BDP in Excel)
bdh()	Bloomberg Data History — historical end-of-day data
bds()	Bloomberg Data Set — bulk data (chains, members, dividends)
disconnect()	Explicitly stop the shared blpapi session

---

Predefined field mappings

FX currencies

from bbg_fetch.core import FX_DICT
# 19 major pairs: EUR, GBP, CHF, CAD, JPY, AUD, NZD, MXN, HKD, SEK,
#                 PLN, KRW, TRY, SGD, ZAR, CNY, INR, TWD, NOK

Implied volatility fields

Mapping	Description
IMPVOL_FIELDS_MNY_30DAY	30-day moneyness-based vol (80%–120%)
IMPVOL_FIELDS_MNY_60DAY	60-day moneyness-based vol
IMPVOL_FIELDS_MNY_3MTH	3-month moneyness-based vol
IMPVOL_FIELDS_MNY_6MTH	6-month moneyness-based vol
IMPVOL_FIELDS_MNY_12M	12-month moneyness-based vol
IMPVOL_FIELDS_DELTA	1M/2M delta-based vol (10Δ–50Δ puts and calls)

---

Configuration

Date defaults

DEFAULT_START_DATE = pd.Timestamp('01Jan1959')  # Historical data
VOLS_START_DATE = pd.Timestamp('03Jan2005')     # Volatility data

Corporate action adjustments

Most price functions support Bloomberg's adjustment flags:

Parameter	Default	Description
CshAdjNormal	True	Normal cash dividends
CshAdjAbnormal	True	Special dividends
CapChg	True	Stock splits and capital changes

---

Testing

Integration tests require an active Bloomberg Terminal connection:

from bbg_fetch import run_local_test, LocalTests

run_local_test(LocalTests.FIELD_TIMESERIES_PER_TICKERS)
run_local_test(LocalTests.IMPLIED_VOL_TIME_SERIES)
run_local_test(LocalTests.CONTRACT_TABLE)
run_local_test(LocalTests.BOND_INFO)
run_local_test(LocalTests.DIVIDEND)
run_local_test(LocalTests.BOND_MEMBERS)

Available tests: FIELD_TIMESERIES_PER_TICKERS, FIELDS_TIMESERIES_PER_TICKER, FUNDAMENTALS, ACTIVE_FUTURES, CONTRACT_TABLE, IMPLIED_VOL_TIME_SERIES, BOND_INFO, LAST_PRICES, CDS_INFO, BALANCE_DATA, TICKERS_FROM_ISIN, DIVIDEND, BOND_MEMBERS, INDEX_MEMBERS, OPTION_CHAIN, YIELD_CURVE, CHECK, MEMBERS.

---

Package structure

bbg_fetch/
    __init__.py       # Public API
    _blp_api.py       # Direct blpapi shim (bdp, bdh, bds) — 400 lines, zero dependencies
    core.py           # High-level fetch functions
    local_tests.py    # Integration tests (requires Bloomberg Terminal)

Troubleshooting

"No module named blpapi"

Install from Bloomberg's package index — see Installation above.

"UnboundLocalError: cannot access local variable 'toPy'"

The C++ DLLs bundled with blpapi failed to load. Reinstall: pip uninstall blpapi -y then reinstall. If on Python 3.13+, downgrade to 3.12.

Corporate proxy blocks Bloomberg's pip index

Download the .whl file manually from https://blpapi.bloomberg.com/repository/releases/python/simple/blpapi/ via browser and install locally with pip install /path/to/blpapi-*.whl.

Empty DataFrames returned

Ensure the Bloomberg Terminal is running (blpapi connects to localhost:8194). Verify field names using Bloomberg's FLDS function and instrument formatting (e.g., "AAPL US Equity", "ES1 Index", "EURUSD Curncy"). Some indices support INDX_MWEIGHT (with weights) while others only support INDX_MEMBERS — use the field parameter in fetch_index_members_weights() accordingly.

"No module named pip" in venv

Bootstrap pip first: python -m ensurepip --upgrade, then install.

PowerShell path errors

Use .\ prefix for relative paths: .\.venv\Scripts\python.exe, not .venv\Scripts\python.exe.

---

What's new in v2.0.0

• xbbg dependency removed — direct blpapi interface, no transitive Rust/pyarrow/narwhals
• field parameter added to fetch_index_members_weights() — supports INDX_MWEIGHT, INDX_MEMBERS, INDX_MEMBERS3
• Test code extracted to local_tests.py with run_local_test() (renamed from run_unit_test)
• bdp(), bdh(), bds() exported for direct low-level access
• Robust field name handling — Bloomberg's inconsistent casing/spacing/hyphens normalized automatically
• Migration from v1.x: replace run_unit_test → run_local_test, all other imports unchanged

License

MIT. See LICENSE.txt.

Citation

@software{bloombergfetch,
  author = {Sepp, Artur},
  title = {{BloombergFetch}: A Python Package for Bloomberg Terminal Data Access},
  year = {2024},
  publisher = {GitHub},
  url = {https://github.com/ArturSepp/BloombergFetch},
  version = {2.0.0}
}