v. Baker, 2019 COA 165

Background

Karl Christopher Baker formed Aviara Capital Partners to buy a controlling interest in a distressed bank and sell assets later for profit; he solicited investors including Donna and Lyal Taylor, Dr. Alan Ng, and Stanley Douglas.
Investors testified Baker promised (among other things) that funds would be used to buy a bank, Class A investors were imminent, investor losses were capped, Baker would not take a salary until profitable, funds would be held in escrow, and investors would get principal back quickly.
The People called Lillian Alves, Deputy Commissioner for the Colorado Division of Securities, as an expert on securities law; the court qualified her over defense objections that her testimony would usurp the jury and misstate the law.
Alves testified about the securities laws, opined that Aviara shares were securities and that certain statements/omissions were material, and repeatedly described — as fact rather than hypothetically — what Baker had said and done, sometimes relying on investigative materials not before the jury.
Baker was convicted of multiple counts of securities fraud and theft and one tax-fraud count; on appeal the court concluded parts of Alves’s testimony improperly invaded the jury’s province and that error was not harmless for the securities-fraud and theft convictions, so those convictions were reversed and remanded for a new trial; the false-tax conviction was affirmed.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Admissibility of expert testimony — did Alves improperly usurp the jury?	Alves’s specialized knowledge of securities law would assist the jury in understanding materiality and whether transactions were securities.	Alves testified as to what Baker did/said, assessed witness credibility, and applied law to disputed facts — invading the jury’s factfinding and determining ultimate issues.	Court: Alves crossed the line by presenting definitive factual conclusions and credibility assessments; this improperly usurped the jury. Her testimony was not harmless for securities and theft counts; convictions reversed and remanded for new trial on those counts.
Variance — admitting evidence that Baker said he would register the securities when indictment did not allege that statement	Evidence that Baker promised to register was relevant and material to intent and disclosure; admissible at trial.	The registration promise was not alleged in the indictment and introduced different factual proof than charged, potentially prejudicing Baker.	Court: A simple variance occurred (trial evidence materially differed from indictment) but Baker showed no prejudice or different defense strategy he would have used; the variance did not warrant reversal.
Amelioration / sentence reduction (class change for theft count)	—	Baker sought postconviction reduction under changed-law provision for one theft conviction.	Court: Moot because securities and theft convictions were reversed; no change to affirmed tax conviction.

Key Cases Cited

People v. Pahl, 169 P.3d 169 (Colo. App. 2006) (expert testimony on securities/materiality can be permissible but risks usurping jury)
Tevlin v. People, 715 P.2d 338 (Colo. 1986) (harmless-error framework articulated)
United States v. Duncan, 42 F.3d 97 (2d Cir. 1994) (expert may not usurp jury by applying law to facts and determining guilt)
United States v. Bilzerian, 926 F.2d 1285 (2d Cir. 1991) (limitations on expert testimony that intrudes on jury’s role)
People v. Prendergast, 87 P.3d 175 (Colo. App. 2003) (expert may define materiality and describe securities transaction)
People v. Rivera, 56 P.3d 1155 (Colo. App. 2002) (expert testimony that an agreement was a security and nondisclosures were material permissible)
People v. Duncan, 109 P.3d 1044 (Colo. App. 2004) (credibility and resolution of conflicting testimony are jury functions)
United States v. Scop, 846 F.2d 135 (2d Cir. 1988) (expert testimony expressing statutory-language conclusions and credibility assessments improperly invaded jury province)
People v. Koon, 724 P.2d 1367 (Colo. App. 1986) (expert status can augment prejudicial effect of improper testimony)
United States v. Montas, 41 F.3d 775 (1st Cir. 1994) (case agent/expert testimony can improperly lend government’s ‘stamp of approval’ to its theory)
United States v. Benson, 941 F.2d 598 (7th Cir. 1991) (expert testimony based on credibility inferences is improper)
Domingo-Gomez v. People, 125 P.3d 1043 (Colo. 2005) (prosecutorial statements implying institutional screening can improperly influence jury)