Computerized trading is hardly new nor is the demonizing of its effects.

22:18 May 24, 2017 

Thank you for the explanation Charles.

I wish all of you a good night.

21:23 May 24, 2017 

I have a feeling that a semicolon would be more likely before "neither" than before "nor", but I can't think of a reason why a comma would be wrong in either case. A comma is certainly often used with both.

21:03 May 24, 2017 

I used a semicolon because I omitted an imaginary 'and': Computerized trading is hardly new (and) neither is the demonizing of its effects.

20:53 May 24, 2017 

"Nor" and "neither" are both correct and idiomatic here. I would use "nor", but there is certainly nothing wrong with "neither". I agree with Jack and Helena that punctuation, either a comma or a semicolon, is required before "nor". I don't think it has to be a semicolon. Personally I would prefer a comma in this particular case.

20:42 May 24, 2017 

You are quite right. In both "the demonizing of its effects" and "demonizing its effects", "demonizing" is a gerund: a noun, a thing. In "he is demonizing its effects", "demonizing" is a verbal participle. I agree with you that "nor/neither is demonizing its effects" would say exactly the same thing more neatly.

We have two main clauses here, each with its own main verb ("is" in both cases), joined by a conjunction ("nor").

19:03 May 24, 2017 

I'm sorry but I'm really busy at the moment and don't have time to explain the nuances of English. Hopefully someone will join in the discussion.

18:59 May 24, 2017 

A gerund is a nominalized verb acting as the subject of the sentence. If you split them up, you'll get:

a) Computerized trading is hardly new. The demonizing of the effects of computerized trading is hardly new either.

b) Computerized trading is hardly new. Demonizing the effects of computerized trading is hardly new either.

"computerized trading" can't be the subject of the second sentence bit.

18:50 May 24, 2017 

Computerized trading is the subject (a noun/nominal phrase).

18:50 May 24, 2017 

The second is a gerund, just like "Swimming in the ocean is dangerous." I don't see the issue.

18:48 May 24, 2017 

the demonizing of its effects = demonizing is a noun;

is demonizing its effects = demonizing is a verb.

18:39 May 24, 2017 

Curious, I thought it sounded a bit clumsy because of "the" and "of" - both words aren't required here: trading <> demonizing

To use your suggestion:
"Computerized trading is hardly new, neither is demonizing its effects."

What do you think?

13:40 May 24, 2017 

I made my comment just before calling it a day and I didn't want to spend more time than necessary in front of the computer!

Whenever I ask a question here, I always appreciate a decent explanation and/or a few references.

00:03 May 24, 2017 

You don't need references!

23:56 May 23, 2017 

I think it's probably right but I wouldn't express it like that. 'Hardly' is a negative adverb, so I suppose the writer has applied the 'neither... nor...' rule but it sounds strange to me.

I would write 'Computerized trading is hardly new; neither is the demonizing of its effects.'

I'm not posting an answer as I don't have any references.