General Electric Co's (GE.N) shares drifted lower for a second straight day on Tuesday after investors wondered if a massive overhaul by new Chief Executive John Flannery to save billions and make the conglomerate smaller was enough to revive the 125-year old Dow component.

GE's stock fell as much as 8.2 per cent to US$17.46, setting it up for its worst two-day losing streak since the financial crisis in 2009. Flannery talked for two days about sweeping changes that will focus on three core businesses but instead it cut about US$24 billion off GE's market capitalization.

Several brokerages lowered ratings and price targets on the stock, disappointed that GE's plan was not more aggressive.

Deutsche Bank analyst John Inch, who has a "sell" rating on GE with a price target of US$18, said bulls had expected the company to move toward outright dismantlement of its portfolio, but GE stuck to the framework of divesting US$20 billion in assets.

Inch said it seems unlikely GE can unlock associated value through "sum of the parts" as it keeps the bulk of its portfolio intact.

Analysts also said GE's move to cut its annual dividend to 48 cents from 96 cents was steeper than expected, putting more pressure on the stock.

"With more than 40 per cent of GE's common equity owned by retail investors, we believe substantial near term selling pressure on GE could further ensue as retail investors who previously counted on the GE dividend look elsewhere," Inch said.

RBC Capital Markets analyst Andrew Krill downgraded the stock to "sector perform" from "outperform" and lowered the price target by US$5 to US$20.

Krill said the market was caught by surprise by the magnitude of the missteps and secular challenges at GE's power business, as well as the systemic cash flow shortfalls.

"Particularly damaging, in our view, was the admission that GE had been paying out a dividend above its industrial free cash flow for a number of years, and that GE Capital would not be paying a dividend to the parent in 2018."

J.P.Morgan analyst Stephen Tusa, who has an "underweight" rating on the stock with a price target of $17, said cost cut targets were not as ambitious as most investors had expected.

GE is aiming to reduce overhead costs by US$2 billion next year, with half of that coming from its troubled power unit, which sells electrical generation equipment.

"The demise of General Electric over the past year has been dramatic, yet arguably unsurprising," said Jordan Hiscott, chief trader at London-based trading services provider Ayondo Markets.