AXA Wealth is expected to enhance its Sipp offering later this year after posting strong results for the first half of 2013 today.
Assets under management for the firm's pension and onshore bonds grew by 20 per cent from £7.8bn to £9.3bn.
Offshore assets under management grew by nine per cent grew from £8bn to £8.8bn.
The Sipp, the Elevate Pension Investment Account, offers a wide range of funds including unit trusts, OEICS and collective investment schemes.
It also runs Family Suntrust which is a Sipp designed for families or business partners to want to invest together.
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Mike Kellard, chief executive at AXA Wealth, said: "We are seeing strong growth across our more mature specialist products range- including our self-invested personal pension and offshore business, for which further enhancements will be introduced later this year. I believe good service will be a key differentiator for advisers over coming years."
Assets on the Elevate platform increased by 48 per cent from £4.3bn to £6.4bn. Elevate saw a 52 per cent increase in inflows from advisers to £945m. June inflows were up 96 per cent year on year and 56 per cent went into clean share classes. Total AXA Wealth assets increased by 21 per cent from £20bn to £24.3bn.