IPG
The Interpublic Group of Companies, Inc.
stock NYSE

US asset manager Defiance ETFs is planning to add to Europe's increasingly granular toolkit of AI 'picks-and-shovels' ETFs with upcoming products targeting memory and photonics.
The Defiance Memory UCITS ETF and the Defiance Photonics UCITS ETF have been filed with the Central Bank of Ireland (CBI) and will launch in partnership with white-label issuer HANetf.
Memory chips act as warehouses to temporarily store data, a key function alongside GPUs and CPUs which enable AI compute to scale in anticipation of increased token demand.
The latter has dominated headlines for being the focus of a recent launch by US thematic specialist Roundhill, whose memory ETF (DRAM) became the fastest to break through $10bn assets, achieving the milestone in just six weeks. Memory chips are often considered the least advanced of the semiconductor segments and companies tend to trade on lower valuations, with short demand surges making it harder to extrapolate earnings far into the future. But a freak wave of orders from frantic data centre construction has seen the share prices of South Korean leaders in the space, SK Hynix and Samsung, surge over 150% in the five months to the start of June.
Thematic specialist Roundhill Investments saw its US-listed memory ETF become the fastest product ever to [reach](https://www.etfstream.com/en/articles/roundhill-plots-europe-etf-return-less-than-three-years-after-exit) $10bn in assets, achieving the milestone in just six weeks after its April launch. Assets have since almost doubled to $19.2bn. 
The Roundhill Memory ETFs’ (DRAM) top three holdings, Micron Technology Inc, SK hynix and Samsung Electronics Co have seen blistering rallies on the back of the AI buildout, spiking 367.9%, 349.4% and 225.2% respectively over the last six months. 
In turn, DRAM has risen 134% since its launch. 
Photonics stocks capture a different piece of the AI infrastructure value-chain. Photonics - using light to transmit data as opposed to electrical signals through copper wire - allow for quicker data transfers and lower power consumption, which can effectively handle the immense power consumption of AI workloads. 
Lumentum Holdings, IPG Photonics and Fabrinet - the top three top holdings of the US-listed Tuttle Capital Pure Play Photonics ETF which launched in May - have rallied 202%, 55.8% and 40.8% over the last six months. 
L&G previously [launched](https://www.etfstream.com/en/articles/lgim-to-close-three-etfs-on-low-traction) a strategy that dedicated a portion of its holdings to the photonics stocks. The L&G Optical Technology & Photonics ESG Exclusions UCITS ETF (LAZR) launched in 2022, but was ultimately shut in early 2025 on low asset gathering

US asset manager Defiance ETFs is planning to add to Europe's increasingly granular toolkit of AI 'picks-and-shovels' ETFs with upcoming products targeting memory and photonics.
The Defiance Memory UCITS ETF and the Defiance Photonics UCITS ETF have been filed with the Central Bank of Ireland (CBI) and will launch in partnership with white-label issuer HANetf.
Memory chips act as warehouses to temporarily store data, a key function alongside GPUs and CPUs which enable AI compute to scale in anticipation of increased token demand.
The latter has dominated headlines for being the focus of a recent launch by US thematic specialist Roundhill, whose memory ETF (DRAM) became the fastest to break through $10bn assets, achieving the milestone in just six weeks. Memory chips are often considered the least advanced of the semiconductor segments and companies tend to trade on lower valuations, with short demand surges making it harder to extrapolate earnings far into the future. But a freak wave of orders from frantic data centre construction has seen the share prices of South Korean leaders in the space, SK Hynix and Samsung, surge over 150% in the five months to the start of June.
Thematic specialist Roundhill Investments saw its US-listed memory ETF become the fastest product ever to [reach](https://www.etfstream.com/en/articles/roundhill-plots-europe-etf-return-less-than-three-years-after-exit) $10bn in assets, achieving the milestone in just six weeks after its April launch. Assets have since almost doubled to $19.2bn. 
The Roundhill Memory ETFs’ (DRAM) top three holdings, Micron Technology Inc, SK hynix and Samsung Electronics Co have seen blistering rallies on the back of the AI buildout, spiking 367.9%, 349.4% and 225.2% respectively over the last six months. 
In turn, DRAM has risen 134% since its launch. 
Photonics stocks capture a different piece of the AI infrastructure value-chain. Photonics - using light to transmit data as opposed to electrical signals through copper wire - allow for quicker data transfers and lower power consumption, which can effectively handle the immense power consumption of AI workloads. 
Lumentum Holdings, IPG Photonics and Fabrinet - the top three top holdings of the US-listed Tuttle Capital Pure Play Photonics ETF which launched in May - have rallied 202%, 55.8% and 40.8% over the last six months. 
L&G previously [launched](https://www.etfstream.com/en/articles/lgim-to-close-three-etfs-on-low-traction) a strategy that dedicated a portion of its holdings to the photonics stocks. The L&G Optical Technology & Photonics ESG Exclusions UCITS ETF (LAZR) launched in 2022, but was ultimately shut in early 2025 on low asset gathering