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.
Contact Helen on +44 (0) 20 7316 9223 or helen.bartholomew@infopro-digital.com
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Articles by Helen Bartholomew
Calamos brings popular US autocall ETF to Europe
Dublin filing points to Q1 launch for Calamos Autocallable Income Ucits ETF
Deutsche Bank returns to US swaps client clearing
Re-entry comes after Basel III endgame proposals sparked capacity concerns among global clients
S&P bull run drives interest in reset and lookback hedges
Variable strike put options proved popular alternative hedging format of 2025
Top 10 investment risks for 2026
AI, strained governments, inflated private assets: risky bets have become hard to avoid
Asset managers prep autocall ETFs with assets tipped to hit $30bn
Actively managed strategies wait in the wings after systematic approach nets Calamos $500m
LSEG adds market risk optimisation for FX options
Tool attracts eight dealers and could be expanded to rates and equity options
Tokenised collateral could lower barriers to tri-party VM
Existing tri-party platforms lack network effects necessary for more efficient collateral reuse
Dealers prep for year-end equity financing surge
Cost of funding equity derivatives bets blew out to 227bp in 2024 and is ticking higher again
Real money rides the hybrid options wave
Insurers follow hedge funds into exotic trades with equity-down, yields-down recession plays
BofA preps single-stock autocalls on new CHF indexes
SIX Group indexes slash implied forward cost for US underlyings including Nvidia and Microsoft
US dividend futures top $6bn on structured note boom
Traders also eye opportunities in options on S&P dividends as April rout creates skew dislocations
Calamos’s $200m inflows trigger autocall ETF ‘frenzy’
First mover expands to US tech, Innovator ETFs plans rival listing on September 25