What does CUSIP 03673L103 represent in this 13F holders report?

CUSIP 03673L103 is the security identifier for AM - ANTERO MIDSTREAM LP - Limited Partnership used to aggregate holder disclosures.

How many institutions held AM - ANTERO MIDSTREAM LP - Limited Partnership in Q4 2018?

133 institutional investors reported AM - ANTERO MIDSTREAM LP - Limited Partnership for Q4 2018. Use the holders table for investor-level position and value details.

ANTERO MIDSTREAM LP - Limited Partnership (AM)

CUSIP: 03673L103

Q4 2018 13F Holders as of 31 Dec 2018

Security type / class: Equity / Limited Partnership
Total 13F shares: 93,556,750
Total 13F value: $2,001,173,695
Share change: +593,511
Put/Call ratio: 48%
SEC-reported price per share: $21.39
Number of holders: 133
Value change: -$5,384,303
Number of buys: 61
Number of sells: 78

Security key

03673L103

Report period

Q4 2018

Institutions

133

Top holders

AM full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 Antero Midstream Corp SEC filings Antero Midstream Corp company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 03673L103

Newer quarter: Q2 2026

Recent filing periods:

Q3 2026 Q2 2026

Ownership snapshot

Top reported holders of AM - ANTERO MIDSTREAM LP - Limited Partnership (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

TORTOISE CAPITAL ADVISORS...

Disclosed value leader

TORTOISE CAPITAL ADVISORS...

Comparable rows

0/15

Latest evidence

30 Sep 2018

13F Highest disclosed value: $367,166,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

TORTOISE CAPITAL ADVISORS, L.L.C. has the largest disclosed position value at $367.17M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens TORTOISE CAPITAL ADVISORS, L.L.C.'s linked filing trail.

Disclosed position value Top 5

TORTOISE CAPITAL ADVISORS, L.L.C. $367.17M

GOLDMAN SACHS GROUP INC $327.95M

ALPS ADVISORS INC $222M

Harvest Fund Advisors LLC $216.38M

Neuberger Berman Group LLC $166.7M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
TORTOISE CAPITAL ADVISORS, L.L.C.	13F Company 13F	— denominator unverified	$367,166,000 12,811,090 shares	—	30 Sep 2018
GOLDMAN SACHS GROUP INC	13F Company 13F	— denominator unverified	$327,949,000 11,442,744 shares	—	30 Sep 2018
ALPS ADVISORS INC	13F Company 13F	— denominator unverified	$222,001,000 7,746,014 shares	—	30 Sep 2018
Harvest Fund Advisors LLC	13F Company 13F	— denominator unverified	$216,381,000 7,549,920 shares	—	30 Sep 2018
Neuberger Berman Group LLC	13F Company 13F	— denominator unverified	$166,698,000 5,816,407 shares	—	30 Sep 2018
CHICKASAW CAPITAL MANAGEMENT LLC	13F Company 13F	— denominator unverified	$143,022,000 4,990,294 shares	—	30 Sep 2018

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q4 2018

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

133

93,556,750

Rows available

133

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q4 2018 vs Q2 2026 Across Filers

Q2 2026 holders

Q4 2018 holders

133

Holder diff

132

Investor	Q2 2026 Shares	Q4 2018 Shares	Share Diff	Share Chg %	Q2 2026 value	Q4 2018 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend