
Helen Bartholomew
London bureau chief
Helen Bartholomew is London bureau chief for Risk.net.
She has written on a range of derivatives and markets topics including benchmark reform, margin rules, equity derivatives and structured products. Prior to joining Risk.net, she was derivatives editor for International Financing Review, part of Thomson Reuters, where she previously reported on debt and equity capital markets.
Helen holds a bachelor’s degree in anthropology from the University of Durham, UK.
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Articles by Helen Bartholomew
QIS 3.0 ‘bonanza’: hedge funds pivot from options to swaps
Pod-level scramble for max-loss exposure gives way to central risk books seeking overlays
Eurex squashes butterflies with Stir incentives
Rebate caps on low-risk strategies flatten mid-curve bulge in €STR contracts
Volatility selling is down, but not out
Shrinking risk premiums could end cycle of vol suppression, traders say – but not just yet
CFTC acting chair: ‘We don’t need a Dodd-Frank for crypto’
US regulator wants real-time market surveillance; focuses on rise of liquidity risk
Fate of US Treasury clearing deadline to be decided at crunch meeting
Isda chief predicts delay as clearing houses await confirmation of go-live dates
AI and Trump tariffs spur hyped-up dispersion trade
Popular vol strategy pays off in January despite highest entry costs on record
Reverse dispersion gains traction as implied spread jumps
Inverted strategy on Euro Stoxx 50 gains popularity for profit-taking and correlation play
How UBS sold off non-core equity assets at lightning speed
More than 40 auctions have been completed since Credit Suisse acquisition, with a little help from a T-Rex
SG looks beyond equity derivatives in new markets push
French bank aims to expand fixed income business to achieve “more stable” revenues across asset mix
Lenders scramble to get ahead of Italian fallback mandate
New law requiring robust fallbacks for Euribor will take effect on January 10
Traders dredge 0DTE data for intraday gamma insights
Firms such as UBS, BofA and OptionMetrics are investing in continuous net options position monitoring
Long gamma puts brakes on post-election US stock rally
Call selling by ETFs helped fuel largest net gamma positioning among dealers since July
CME launches late term €STR bid
Exchange group becomes third provider with rate built on €135 billion of daily transactions
Canada benchmark shaken by T+1 hedge fund influx
Shortened settlement cycle swept hedge fund trades into Corra, making the rate more volatile
JPM sees upside in blurring lines between QIS and SMAs
Hedge funds are combining their strategies with bank indexes to create new products
Hedge funds pile into short volatility QIS options
New twist on capturing vol premium remains popular despite mixed performance in August vol spike
BNP Paribas exec fears data drought from market’s IMA cuts
Vendors may not step up with critical inputs to support internal models under FRTB
UBS embraces ‘narrative alpha’ for new form of sentiment strategy
NLP engine traces how stories spread, instead of counting words
Newton and BofA launch ‘all-weather’ QIS hedging index
Adaptive index sees investment manager toggle between a menu of quant strategies
AB’s faith in ‘magnificent others’ starts to pay off
Talking heads: Hybrid quant and fundamental approach proves its mettle as mega-cap magic begins to tarnish
Simm casts off Covid pain for $40 billion IM reprieve
Recalibration cuts risk weights in equity and commodities, but some credit exposures double on ABX halt
Supply chain decoupling fires up alpha focus at BofA
Talking Heads: Stock dispersion sees funds gross up on long/short baskets, while US structured notes come of age
Another post-Libor rate aims to clear Iosco bar
After two rivals were slapped down by the benchmark overseer last year, will Axi fare differently?
ETF dispersion set for election revival
Sector-based approach to popular vol trades boasts cheaper entry cost than classic version, proponents argue