Track SEC Filings by Market Cap with Claude

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If you read SEC filings for a living, this is what Shibui looks like in practice. Companies push their worst news out after the closing bell, and EDGAR shows you every 8-K the moment it lands - but not how big the filer is. So you scan a wall of names with no way to tell a $300 million micro-cap from a $300 billion bellwether, and you look each unfamiliar ticker up by hand. The walkthrough below shows how one user turns that after-close scan into a ranked, filtered triage list.

Be clear about one thing up front: Shibui has filing metadata - dates, form types, 8-K item codes, and a link to each document on EDGAR. It does not have the text of the filings. It tells you which filings are worth opening and ranks them by size. You still read the document itself on EDGAR.

Scan the filings that just landed

The first pass is the whole dump. You pull every 8-K that came in this week and attach the one column EDGAR never shows you - market cap - so the list sorts by what actually matters.

You ask

"Show me the 8-Ks filed this week by US companies over $250 million market cap. Add the item codes and rank by market cap, so I read the biggest names first."

Claude returns

output

8-Ks filed this week - US companies over $250M, ranked by market cap:

Symbol        Company             Mkt Cap  Items                Filed (ET)
────────────  ──────────────────  ───────  ───────────────────  ───────────
GOOGL.NASDAQ  Alphabet            $4,502B  1.01 7.01 8.01 9.01  Jun 4 17:07
MSFT.NASDAQ   Microsoft           $3,178B  5.02                 Jun 5 10:36
AVGO.NASDAQ   Broadcom            $1,986B  2.02 8.01 9.01       Jun 3 12:21
JPM.NYSE      JPMorgan Chase        $838B  8.01 9.01            Jun 2 16:15
MA.NYSE       Mastercard            $426B  5.02 9.01            Jun 2 16:15
GS.NYSE       Goldman Sachs         $324B  9.01                 Jun 3 16:43
TXN.NASDAQ    Texas Instruments     $277B  5.02                 Jun 2 16:16
PANW.NASDAQ   Palo Alto Networks    $228B  2.02 9.01            Jun 2 16:08
CRM.NYSE      Salesforce            $174B  5.02                 Jun 2 16:15

Each row links to the filing on EDGAR. Market cap is the column EDGAR
doesn't show - and it's the difference between a name worth opening and noise.

The names at the top are the ones to look at first. The item codes tell you what each filing is about before you open it. Notice the timestamps: most of these landed at or just after the 4pm close.

Narrow to the events that matter

Most 8-Ks are routine - earnings exhibits, shareholder-vote results, Regulation FD slides. A handful are not. You filter to the item codes that tend to carry buried news:

5.02 - a director or officer departed, retired, or was appointed
1.02 - a material agreement was terminated
2.04 - a debt obligation was accelerated or triggered
4.02 - prior financial statements can no longer be relied on (a restatement)
2.05 - the company booked exit or restructuring costs

You ask

"Now just the ones reporting a leadership change, a terminated agreement, a restatement, an accelerated debt obligation, or restructuring costs. Sort by market cap."

Claude returns

output

High-signal 8-Ks this week - over $250M, sorted by market cap:

Symbol       Company            Mkt Cap  Item  Event
───────────  ─────────────────  ───────  ────  ───────────────────────────
MSFT.NASDAQ  Microsoft          $3,178B  5.02  Officer / director change
CVX.NYSE     Chevron              $375B  5.02  Officer / director change
TXN.NASDAQ   Texas Instruments    $277B  5.02  Officer / director change
DE.NYSE      Deere & Co           $159B  5.02  Officer / director change
GM.NYSE      General Motors        $75B  5.02  Officer / director change
SATS.NASDAQ  EchoStar              $36B  2.04  Accelerated debt obligation
VG.NYSE      Venture Global        $32B  2.04  Accelerated debt obligation
EL.NYSE      Estee Lauder          $30B  2.05  Exit / restructuring costs

EchoStar and Venture Global each filed an item 2.04 the same week - the category for a triggered or accelerated financial obligation. Estee Lauder disclosed restructuring costs under 2.05. None of that stands out in a raw EDGAR list, where every filing looks the same until you open it.

Check it against your coverage list

Tracking a defined universe? Give Shibui your list and it tells you which names filed and what the filing was, so you are not scanning the whole feed for the dozen tickers you actually follow.

You ask

"Which names on my watchlist (AAPL, MSFT, NVDA, JPM, XOM, UNH, WMT, DIS) filed an 8-K in the last 7 days, and what was it about?"

Claude returns

output

Watchlist - 8-Ks filed in the last 7 days (3 of 8 names):

Symbol       Company         Filed   Items      Event
───────────  ──────────────  ──────  ─────────  ─────────────────────────
MSFT.NASDAQ  Microsoft       Jun 5   5.02       Officer / director change
JPM.NYSE     JPMorgan Chase  Jun 2   8.01 9.01  Other event + exhibits
XOM.NYSE     Exxon Mobil     May 29  5.07       Shareholder vote results

AAPL, NVDA, UNH, WMT and DIS had no 8-K in this window.

Three of the eight filed this week. The other five stayed quiet, which is itself worth knowing on a slow day.

Pull one company's filing history

When a name earns a closer look, you pull its filing fingerprint - every form it has filed, grouped by type, newest first. The shape of the fingerprint tells you what kind of company you are looking at.

You ask

"What has NVIDIA filed with the SEC over the last two years? Break it down by form type."

Claude returns

output

NVIDIA (NVDA) - SEC filings by type, last 2 years:

Form     What it is             Count  Most recent
───────  ─────────────────────  ─────  ───────────
4        Insider transaction      222  2026-05-29
144      Proposed insider sale    204  2026-06-03
8-K      Material event            20  2026-05-20
10-Q     Quarterly report           6  2026-05-20
3        New insider                4  2026-05-14
DEF 14A  Proxy statement            2  2026-05-12
10-K     Annual report              2  2026-02-25

Metadata only - form types, dates, and links to EDGAR, not the contents.

NVIDIA's last two years are dominated by Form 4 and Form 144 - insider transactions and proposed sales. A company whose disclosure traffic is mostly insiders moving stock has a different profile than one filing mostly 8-Ks, and it took one question to see the difference.

What this is, and what it isn't:

Metadata, not contents. You get filing dates, form types, 8-K item codes, and a link to each document. To read what a filing says, you open it on EDGAR.
Market cap lags about a day. Valuation is end-of-day, so for a filing that just hit, the size is last night's close - a ballpark, which is all triage needs.
Coverage is NYSE and NASDAQ common stock. Some filers - certain funds, foreign private issuers, OTC names - will not resolve to a market cap and show blank. See the data sources page for full coverage and refresh details.
Export any list to Excel by asking Claude for it.

Tracking filings is one way people use Shibui. See how portfolio managers use it, browse real-world query examples, or read the full feature guide.

Contact

Track filings as part of your work and want to compare notes? chris@shibui.finance

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