The trust's discount narrowed from 13.8% to 10.4% in the six months to 30 September, as it repurchased £53.6m in shares, one of the largest in the listed alternative assets space.
It is now sitting at a 9.8% discount, according to data from the Association of Investment Companies.
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The trust's interim results, released today (24 November), revealed that net asset value had grown by 3.3%, while its share price rose 7.9%.
The gains to NAV came entirely from interest income, with a gain of 5.17p in NAV per share, while portfolio valuation movements represented a 1.98p NAV per share decline.
Mainly investing in private debt backed by infrastructure assets in stable and low-risk jurisdictions, the portfolio has seen a decline in overall holdings, dropping from 68 six months ago to 57.
Numis analyst Colette Ord said: "With a robust, diversified portfolio, and a positive tone in management's market outlook, we believe the shares continue to offer value at current levels, underpinned by an attractive 8.2% yield and supportive buyback programme.
"Moreover, SEQI provides helpful disclosure on the 'pull-to-par' effect (+4.3p) over the remaining life of its investments, which should also provide a tailwind to performance in the coming years."
Chair change
Additionally, in a stock exchange notice today, the trust's chair Robert Jennings revealed he would step down from the board on 1 January 2024.
After nine years in the position, Jennings will be replaced by James Stewart, who joined the board on 1 January 2022.
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Before joining the board, Stewart spent ten years at KPMG, sitting as a non-executive member of the KPMG board and chair of KPMG's Global Infrastructure practice. Before that, he was chief executive of Infrastructure UK and Partnerships UK.
Jennings said: "It has been a great privilege to serve as inaugural chair of SEQI for the last nine years. I am delighted that James will take over as our next chair.
"I have enjoyed working alongside him since he joined the board and believe he has the requisite attributes to be ideally suited to this role."
Stewart added: "Robert has played a key role in SEQI's highly successful development since its inception. On behalf of the board, I would like to thank Robert for his dedicated leadership over the past nine years and wish him well in his retirement."