VOL. XCIV, NO. 247
★ BEST INVESTING TOOLS COMPARISON ★
NO ADVICE
Sunday, May 31, 2026
Tool Comparison · Sunday, May 31, 2026
AUM 13F vs OpenInsider
AUM 13F vs OpenInsider: which investing tool fits your workflow? Compare pricing, features, platforms, and verdict in seconds.
AUM 13F
aum13f.com
Best for 13f, and 13d/13g
- Pricing
- Free • From $29/mo
- Platforms
- Web
OpenInsider
Pickopeninsider.com
Best for screeners
- Pricing
- Free
- Platforms
- Web
Outbound links may include affiliate or sponsor codes.
Comparison snapshot
Who should choose which?
Choose
AUM 13F if…
- You need analyze asset managers using public filings and drill into edgar, iapd, and cafr source data.
- You need homepage remains active with current large-manager aum rankings; examples observed in may 2026 include vanguard group ($10,246.6b), fidelity management & research ($4,730.7b), blackrock fund advisors ($3,535.4b), capital research and management ($3,315.4b), and pimco ($2,990.2b).
- You need filter/browse by fund type (private equity, hedge fund, real estate) plus tags, location, and aum size.
- You need firm pages aggregate aum history, aum breakdowns, and form 13f holdings (with sector views) and link to edgar filings (e.g., 13f-hr, sc 13g, forms d/3/4).
Choose
OpenInsider if…
- You’re just getting started and want an approachable UI
- You need real-time data, not delayed quotes
- You need real-time sec form 4 insider trading screener for insider buying and selling.
- You need pre-built report pages such as “latest insider purchases”.
Consider alternatives if…
- You want broader category coverage in one tool.
- Neither pricing tier fits your budget.
Side-by-side feature breakdown
| Attribute | AUM 13F | OpenInsider |
|---|---|---|
Asset types | StocksETFsHedge FundsPrivate FundsReal EstateFunds | StocksClosed-End Funds |
Experience | IntermediateAdvanced | BeginnerIntermediateAdvanced |
Regions | Not specified | North America |
Data freshness | Not specified | Real-time |
API access | Not specified | Not specified |
Export formats | Not specified | CSV |
Seen enough? Open either tool and try it now.
Pricing breakdown
Tool
AUM 13F
$29/mo
Starting price
Plans & pricing
Tool
OpenInsider
—
Starting price
Plans & pricing
Pricing not published
Coverage overlap
Categories where both tools offer overlapping coverage.
Community category leaders
Vote sentiment comparison
Loading sentiment chart...
Still deciding? Get hands-on with both — most plans offer a free tier or trial.
Frequently Asked Questions
What's the difference between AUM 13F and OpenInsider?
AUM 13F focuses on 13F, 13D/13G, and Insider Data while OpenInsider specializes in Insider Data, Screeners, and Data Visualizations. They overlap in 2 categories, so choose based on your preferred workflow and pricing.
How much do AUM 13F and OpenInsider cost?
Good news—both AUM 13F and OpenInsider offer free plans. You can try each platform without commitment and only pay when you need premium features.
Which is better for beginners—AUM 13F or OpenInsider?
OpenInsider is more beginner-friendly with an approachable interface. Both can work for intermediate users.
Should I choose AUM 13F or OpenInsider?
Choose AUM 13F if you need Analyze asset managers using public filings and drill into EDGAR, IAPD, and CAFR source data., and Homepage remains active with current large-manager AUM rankings; examples observed in May 2026 include Vanguard Group ($10,246.6B), Fidelity Management & Research ($4,730.7B), BlackRock Fund Advisors ($3,535.4B), Capital Research and Management ($3,315.4B), and PIMCO ($2,990.2B).. Go with OpenInsider if Real-time SEC Form 4 insider trading screener for insider buying and selling., and Pre-built report pages such as “Latest Insider Purchases”. better fits how you invest.
What asset classes do AUM 13F and OpenInsider cover?
Both cover Stocks. AUM 13F also includes ETFs, Hedge Funds, Private Funds, Real Estate, and Funds. OpenInsider adds coverage for Closed-End Funds.
Does AUM 13F or OpenInsider have real-time data?
OpenInsider offers real-time data feeds, which is essential for active traders. AUM 13F uses delayed or end-of-day data, which works fine for longer-term investors who don't need up-to-the-second quotes.
Can I export data from AUM 13F and OpenInsider?
OpenInsider supports data exports to CSV. AUM 13F has more limited export options.
Which has a better stock screener—AUM 13F or OpenInsider?
OpenInsider includes a stock screener for finding investment ideas. AUM 13F focuses on other analytical tools.
Other tools you might like
These profiles share overlapping coverage with both sides of this matchup.
Keep Exploring
Global rankings of the highest-rated tools across all categories.
Ranked list of companies with durable competitive advantages.
Proven models entering their growth phase with solid economics.
Track votes, sentiment, and engagement across the community.
Learn moat types, red flags, and real-company examples.
Browse other head-to-head tool comparisons and alternatives.
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.