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MARKWEST ENERGY PARTNERS L P: filings

Every MARKWEST ENERGY PARTNERS L P annual and quarterly report in the SEC record with the published financial measures it tagged, 22 filings, each linked to its SEC index.

Filing record ends 2015-11-04

The latest filing in this captured record is a 10-Q filed 2015-11-04. No later filing is in the SEC companyfacts record captured on 2026-09-22. MARKWEST ENERGY PARTNERS L P may have stopped filing, merged, or changed its reporting entity; nothing on this page describes its current status. Values are as reported at the time.

Filings with published measures

Each page shows what one filing reported, as tagged in that filing, with the periods it covered. Later filings can restate a value; the company overview shows the latest-filed value per period.

FormFiledFiscal periodMeasuresFactsSEC accession
10-Q2015-11-04fiscal Q3 201532920001104659-15-075473
10-Q2015-08-05fiscal Q2 201532920001104659-15-056176
10-Q2015-05-06fiscal Q1 201534700001104659-15-034524
10-K2015-02-25fiscal FY 2014351250001047469-15-001157
10-Q2014-11-05fiscal Q3 2014341000001104659-14-077042
10-Q2014-08-06fiscal Q2 2014351040001104659-14-057564
10-Q2014-05-07fiscal Q1 201435730001104659-14-035759
10-K2014-02-26fiscal FY 2013371220001047469-14-001391
10-Q2013-11-12fiscal Q3 2013351040001104659-13-083675
10-Q2013-08-07fiscal Q2 2013361060001104659-13-061019
10-Q2013-05-08fiscal Q1 201337770001104659-13-038831
10-K2013-02-27fiscal FY 2012371230001047469-13-001816
10-Q2012-11-07fiscal Q3 2012361060001104659-12-075324
10-Q2012-08-06fiscal Q2 2012361060001104659-12-054345
10-Q2012-05-07fiscal Q1 201235740001104659-12-033822
10-K2012-02-28fiscal FY 2011381260001047469-12-001759
10-Q2011-11-07fiscal Q3 2011341000001104659-11-061612
10-Q2011-08-08fiscal Q2 2011371060001104659-11-044832
10-Q2011-05-09fiscal Q1 201132680001047469-11-004791
10-K2011-02-28fiscal FY 201033860001047469-11-001544
10-Q2010-11-08fiscal Q3 201032900001047469-10-009424
10-Q2010-08-09fiscal Q2 201032900001047469-10-007241

Inspect the source

Entity
MARKWEST ENERGY PARTNERS L P / CIK 0001166036
Captured
SEC response SHA-256
c5ee040151ac32354292ae8a7d9e387077f0082d31e24dc51bfd1b20c78675fd

Current SEC company facts · Download the original response snapshot (gzip) · Download the selected JSON

Every published concept a filing tagged, with the periods it covered, as reported in that filing at capture time. Forms 10-K, 10-K/A, 10-Q, 10-Q/A, 20-F, 20-F/A, 40-F, 40-F/A. A filing page needs at least 8 published concepts. Later filings can restate these values; the company history pages show the latest-filed value per period.

Public company accounting reference, not market prices, returns, an investment recommendation, or ALPHAC performance. Validate a separately constructed return series with the validation API; accounting values are not returns.

Use this in research

A financial period ends before its results become public. Use the filing date as a minimum availability boundary, inspect amendments, and retain the original filing vintage when testing historical signals. This latest-filed selection can contain information unavailable at the time.

These pages do not supply prices, total-return histories, corporate-action adjustments or a tradable universe. Build those inputs separately before evaluating a strategy. A profitable backtest can still reflect selection bias or costs that were left out.

Research methodology · Execution and cost assumptions · Check backtest overfitting

Build with the open-source tools

Use these accounting records as inspectable inputs. When you have constructed a return series, the validation tools can help test its statistical evidence and preserve the result with its limitations.

Read the published dataset with Python
import json
from urllib.request import urlopen

with urlopen("https://canlicapital.com/company-data/0001166036.json") as response:
    record = json.load(response)
print(record["fetched_at"])
print(record["policy"])
for concept in record["concepts"]:
    print(concept["tag"], next(iter(concept["observations"])))