BEST INVESTING TOOLS COMPARISON

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Checked September 24, 2026

Tool Comparison

AUM 13F vs DATAROMA

AUM 13F

TestedOur pick for most investors
Review & pricing
Paid from
$29/mo, billed monthly
Free plan
Yes
Platforms
Web

Best if

  • You want improved filings, watchlist, and alerts.
Paid from
—
Free plan
Yes
Platforms
Web

Best if

  • You want stock ideas.
  • You're newer to investing and want something approachable
  • You're a long-term investor who cares more about fundamentals than headlines
Our pick for most investors

Start here

AUM 13F logo

AUM 13F

aum13f.comTested

Free • From $29/mo, billed monthly · Web

  • You want improved filings, watchlist, and alerts.

Pick DATAROMA instead if

DATAROMA logo

DATAROMA

dataroma.comTested

Free · Web

  • You want stock ideas.
  • You're newer to investing and want something approachable

Skip both if: Neither one clicks with how you research; there are strong third options.

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Our take

The bottom line

AUM 13F and DATAROMA cover a lot of the same ground (2 shared categories, institutional ownership and insider data), so for the basics you won't go far wrong with either. AUM 13F simply does more: 6 categories to DATAROMA's 3, including improved filings, watchlist, and alerts. DATAROMA counters by being completely free.

What readers say

AUM 13F

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DATAROMA

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Key differences at a glance

Asset coverage
AUM 13FAdds hedge funds and private funds
Broader coverage
AUM 13F6 vs 3 categories
Beginner friendly
DATAROMA
Free plan
Both
See the full side-by-side table
AUM 13F logo

What AUM 13F does best

  1. Research coverage for asset managers using public filing sources such as EDGAR, IAPD, and CAFR-linked records.
  2. Browsing access to large-manager AUM rankings, firm profiles, AUM history, AUM breakdowns, and manager-level holdings context.
  3. Filters for managers by fund type, tags, location, AUM size, and related public-filing attributes.
  4. Direct access to firm pages that combine AUM data, Form 13F holdings, sector views, and links to underlying filing documents.
  5. The latest EDGAR filings feed with filing-type filters for 13F, Form D, 8-K, 10-Q, 10-K, insider forms, and other disclosures.
DATAROMA logo

What DATAROMA does best

  1. Curated superinvestor portfolios with each manager's reported holdings in one table.
  2. Review position size, portfolio weight, share count, reported price, current price, activity labels, and 52-week context for tracked holdings.
  3. Comparison tools for quarter-based portfolio changes, top buys, top sells, and manager-level activity from public filing data.
  4. Holdings Summary and Grand Portfolio views showing stocks owned by multiple tracked investors.
  5. Stock pages for Super Investor Stats, ownership count, rank across tracked portfolios, and related insider buying or selling summaries.

Side by side

Pricing & plans
Starting price
Free • From $29/mo, billed monthly
Free
Free tier
Yes
Yes
Free trial
—
—
Platforms & access
Web app
Yes
Yes
Mobile app
No
No
API access
No
No
Coverage & data
Asset types
StocksETFsHedge FundsPrivate FundsReal EstateFunds
StocksETFs
Target audience
Institutional InvestorsAnalysts
Retail TradersPro RetailLong-term InvestorsValue InvestorsAnalystsStudents/Researchers

Pricing comparison

Free plan
Free
—
Entry paid plan
$29/moBilled monthly“Subscription”
—

See for yourself

Side by side

Price, platforms, data, and market coverage.
Show
Side-by-side comparison of AUM 13F and DATAROMA
Attribute
AUM 13F logo
AUM 13F
DATAROMA logo
DATAROMA
Pricing & plans
Starting price
Free • From $29/mo, billed monthlyFree
Free tier
YesYes
Free trial
——
Plan limits
Free: daily views: Limited (not disclosed)—
Platforms & access
Web app
YesYes
Mobile app
NoNo
API access
NoNo
Audience & fit
Experience level
Intermediate, AdvancedBeginner, Intermediate, Advanced
Best for
Institutional Investors and AnalystsRetail Traders, Pro Retail +4 more
Categories covered
63
Regions
—North America
Try itVisit AUM 13FVisit DATAROMA

Standout features

The best features of AUM 13F and DATAROMA.
Show
AUM 13F logo

What AUM 13F does best

  1. Research coverage for asset managers using public filing sources such as EDGAR, IAPD, and CAFR-linked records.
  2. Browsing access to large-manager AUM rankings, firm profiles, AUM history, AUM breakdowns, and manager-level holdings context.
  3. Filters for managers by fund type, tags, location, AUM size, and related public-filing attributes.
  4. Direct access to firm pages that combine AUM data, Form 13F holdings, sector views, and links to underlying filing documents.
  5. The latest EDGAR filings feed with filing-type filters for 13F, Form D, 8-K, 10-Q, 10-K, insider forms, and other disclosures.
DATAROMA logo

What DATAROMA does best

  1. Curated superinvestor portfolios with each manager's reported holdings in one table.
  2. Review position size, portfolio weight, share count, reported price, current price, activity labels, and 52-week context for tracked holdings.
  3. Comparison tools for quarter-based portfolio changes, top buys, top sells, and manager-level activity from public filing data.
  4. Holdings Summary and Grand Portfolio views showing stocks owned by multiple tracked investors.
  5. Stock pages for Super Investor Stats, ownership count, rank across tracked portfolios, and related insider buying or selling summaries.

All details

Every attribute we track for AUM 13F and DATAROMA.
Show
Attribute
AUM 13F logo
AUM 13F
DATAROMA logo
DATAROMA
Coverage & fit
Asset types
StocksETFsHedge FundsPrivate FundsReal EstateFunds
StocksETFs
Experience
IntermediateAdvanced
BeginnerIntermediateAdvanced
Target audience
Institutional InvestorsAnalysts
Retail TradersPro RetailLong-term InvestorsValue InvestorsAnalystsStudents/Researchers
Regions
Not specified
North America
Coverage details
Identifiers: CIK, CUSIP, and Ticker
Identifiers: Ticker
Plans & trust
Vendor & support
Chen Software LLCSupport: Email
Not specified

Green tags are exclusive to that tool in this comparison.

Pricing

Plans, billing, free trials, and monthly prices.
Show
Plan-by-plan pricing comparison of AUM 13F and DATAROMA
Tier
AUM 13F logo
AUM 13F
DATAROMA logo
DATAROMA
Free plan
Freedaily views: Limited (not disclosed)
—
Entry paid plan
$29/moBilled monthly“Subscription”
—

Questions we keep getting

What's the difference between AUM 13F and DATAROMA?

AUM 13F leans toward institutional ownership, insider data, and improved filings, while DATAROMA puts more weight on stock ideas, institutional ownership, and insider data. They overlap in 2 categories, so for most people it comes down to workflow preference and price.

How much do AUM 13F and DATAROMA cost?

Good news: both AUM 13F and DATAROMA have free plans, so you can run them side by side and only pay if you hit a wall.

Which is better for beginners: AUM 13F or DATAROMA?

DATAROMA is the friendlier place to start; its interface takes less getting used to. Both work fine once you're past the basics.

Should I choose AUM 13F or DATAROMA?

It depends on what you're after. Pick AUM 13F if improved filings and watchlist matter to you; go with DATAROMA if you'd rather have stock ideas. And if you only need the basics both share, let price decide.

What asset classes do AUM 13F and DATAROMA cover?

Both cover stocks and ETFs. AUM 13F also handles hedge funds, private funds, and real estate.

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Curation & Accuracy

This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).

Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.