Aviva plc’s £350m buyback reversed only 15% of the Direct Line shares it issued

Aviva plc (LSE: AV.) delivered a 24% increase in first-half operating profit to £1.33 billion, but operating earnings per share increased by only 10% to 31.8 pence. One reason for that gap sits in the denominator: Aviva plc issued approximately 378 million new shares to Direct Line Insurance Group shareholders when the £3.7 billion acquisition completed in July 2025, substantially enlarging the equity base against which current earnings are divided.

Aviva plc has since completed a £350 million share repurchase programme, buying 56,721,704 ordinary shares at an average price of 617.05 pence and cancelling them. That sounds substantial in isolation, but those repurchases equal only about 15% of the roughly 378.1 million shares issued for Direct Line. Approximately 321 million shares of the acquisition-related increase therefore remain unmatched by that particular buyback.

That does not mean Aviva plc should necessarily buy all of those shares back. Direct Line brought additional earnings, customers, insurance scale and expected cost and capital synergies. The more useful point is that evaluating the acquisition through total profit alone can overstate the improvement experienced by each individual share.

Why did Aviva plc’s 24% profit growth translate into only 10% EPS growth?

Aviva plc’s weighted average share count increased to approximately 3.029 billion in the first half of 2026 from 2.664 billion a year earlier, an increase of roughly 13.7%. The company’s financial results attribute that movement principally to the 378 million shares issued for Direct Line, partly offset by roughly 56 million shares removed through the 2026 repurchase programme.

That increase in the denominator helps reconcile the headline earnings numbers. Operating profit rose from £1.07 billion to £1.33 billion, an increase of just over 24%, while operating EPS advanced only 10%. Aviva plc therefore needs a meaningfully larger absolute profit base simply to generate the same percentage improvement at the per-share level after the acquisition-related issuance.

This is why management’s target for 11% compound annual operating EPS growth through 2028 is a more demanding test of the Direct Line transaction than group profit growth alone. The acquired business must create enough additional profit and synergy value to compensate for the larger share base before delivering genuine per-share accretion.

How much of the Direct Line share issuance has the buyback actually reversed?

The arithmetic is straightforward. Aviva plc issued 378,143,305 new ordinary shares for the Direct Line transaction and subsequently bought back about 56.72 million shares under the £350 million programme. The repurchase therefore offsets approximately 15.0% of those acquisition shares.

The remaining difference is about 321.4 million shares. Using Aviva plc’s August 14 closing price of approximately 727 pence purely as an illustrative calculation, repurchasing that number of shares at a constant price would require roughly £2.34 billion. Actual market purchases on that scale would occur at varying prices and could themselves influence the stock, so this should not be treated as a realistic buyback forecast. The calculation simply illustrates the scale of the equity issued relative to the £350 million repurchase already completed.

There is another valuation effect. Aviva plc paid an average 617.05 pence for the shares bought under the completed programme. At 727 pence, the same £350 million would theoretically retire only about 48.1 million shares, around 15% fewer than the 56.7 million actually repurchased. Rising share prices make future buybacks progressively less powerful as a mechanism for reducing the acquisition-related share count.

Does Aviva plc actually need to reverse the entire dilution?

Not necessarily. Treating every share issued for an acquisition as dilution that must eventually be bought back would ignore what Aviva plc received in exchange.

Direct Line is now contributing to a larger UK personal-lines franchise, while Aviva plc has already captured around £100 million of its £225 million annual cost-synergy target. The group has also delivered approximately £150 million of capital synergies and expects further benefits as integration progresses. Those gains can support earnings per share without requiring Aviva plc to mechanically return to its pre-acquisition share count.

The acquisition also coincides with growth elsewhere. Wealth net inflows increased 32% to £7.6 billion in the first half, General Insurance gross written premiums rose 29% to about £8.1 billion and Aviva plc maintained its target for 11% compound annual operating EPS growth through 2028.

The real test is therefore whether earnings created by Direct Line and the rest of the group grow faster than the enlarged equity base.

Why EPS may now be the cleaner Direct Line scorecard than total profit

Aviva plc’s first year with Direct Line inside the group demonstrates the distinction clearly. Operating profit is up 24%, but operating EPS is up 10%. That is still healthy per-share growth, particularly while integration remains underway, but it shows why shareholders should resist judging the acquisition solely from the much larger absolute profit number.

The completed £350 million buyback helps at the margin, yet it has reversed only around 15% of the shares issued for Direct Line. Aviva plc therefore needs the acquisition’s earnings, cost synergies, capital benefits and organic growth to do most of the work.

If those drivers allow operating EPS to compound at management’s targeted 11% through 2028, the larger share count will look like an acceptable price for acquiring a more powerful insurance franchise. If profit continues growing much faster than earnings per share, investors may increasingly ask whether enough of the Direct Line value is reaching each individual Aviva plc share.