IJR S&P Smallcap 600 Index Ishares

AMX
$139.46

S&P Smallcap 600 Index Ishares (IJR) Hedge Fund Activity

This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.

Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.

Hedge fund breadth
+70.00
17 buyers / 3 sellers
STRONG BUYING
Funds compared
20
funds with comparable IJR positions
19 current holders · 10 prior-quarter holders
Net share change
+4.39M
+4.42M added, -26.8K cut
Position activity
10 new 7 increased 2 reduced 1 exited

Most significant moves

Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.

Fund Action Shares changed Change Est. value Portfolio wt. Score
Millburn Ridgefield Quant Macro Increased +1.61M +65.6% $239.0M 51.1% 78
TWO SIGMA INVESTMENTS, LP Quant New +351.6K — $52.1M 0.0% 64
RENAISSANCE TECHNOLOGIES LLC Quant New +212.8K — $31.5M 0.1% 63
D. E. Shaw & Co., Inc. Quant New +141.2K — $20.9M 0.0% 62
Weiss Asset Management Event Quant New +171.7K — $25.4M 0.4% 60
MARSHALL WACE, LLP Long/Short Sold Out -7.8K -100.0% $1.2M 0.0% 58
CITADEL ADVISORS LLC Quant New +3.7K — $544.7K 0.0% 58
Squarepoint Ops LLC Quant New +55.6K — $8.2M 0.0% 57
MILLENNIUM MANAGEMENT LLC Increased +245.7K +9582.9% $36.4M 0.1% 56
Chilton Investment Company Long/Short Value Increased +68.8K +2347.1% $10.2M 0.4% 54

Most significant buyers

By move score, not size.

  • Millburn Ridgefield Increased · +1.61M
  • TWO SIGMA INVESTMENTS, LP New · +351.6K
  • RENAISSANCE TECHNOLOGIES LLC New · +212.8K
  • D. E. Shaw & Co., Inc. New · +141.2K
  • Weiss Asset Management New · +171.7K

Most significant sellers

By move score, not size.

  • MARSHALL WACE, LLP Sold Out · -7.8K
  • Quantbot Technologies Reduced · -16.9K
  • Y-Intercept Reduced · -2.0K

Hedge fund positions

Fund Tier Shares Previous Change Change % Portfolio wt. Action Score
Millburn Ridgefield 1 4.1M 2.5M +1.61M +65.6% 51.1% Increased 78
TWO SIGMA INVESTMENTS, LP 2 351.6K 0 +351.6K — 0.0% New 64
RENAISSANCE TECHNOLOGIES LLC 1 212.8K 0 +212.8K — 0.1% New 63
D. E. Shaw & Co., Inc. 1 141.2K 0 +141.2K — 0.0% New 62
Weiss Asset Management 2 171.7K 0 +171.7K — 0.4% New 60
MARSHALL WACE, LLP 2 0 7.8K -7.8K -100.0% 0.0% Sold Out 58
CITADEL ADVISORS LLC 1 3.7K 0 +3.7K — 0.0% New 58
Squarepoint Ops LLC 2 55.6K 0 +55.6K — 0.0% New 57
MILLENNIUM MANAGEMENT LLC 2 248.3K 2.6K +245.7K +9582.9% 0.1% Increased 56
Chilton Investment Company 2 71.7K 2.9K +68.8K +2347.1% 0.4% Increased 54
Gotham Asset Management, LLC 2 432.0K 116.4K +315.6K +271.1% 0.3% Increased 54
Tudor Investment Corporation 2 1.4K 0 +1.4K — 0.0% New 53
Schonfeld Strategic Advisors 3 54.5K 0 +54.5K — 0.1% New 53
Qube Research & Technologies Ltd 2 89.9K 12.7K +77.2K +607.2% 0.0% Increased 53
AQR Capital Management 3 1.2M 144.7K +1.08M +743.5% 0.1% Increased 53
Trexquant Investment 3 6.7K 0 +6.7K — 0.0% New 51
Edgestream Partners 4 6.6K 0 +6.6K — 0.0% New 49
Quantbot Technologies 4 1.2K 18.1K -16.9K -93.4% 0.0% Reduced 40
Balyasny Asset Management L.P. 2 121.0K 102.8K +18.3K +17.8% 0.0% Increased 33
Y-Intercept 4 5.5K 7.5K -2.0K -27.2% 0.0% Reduced 24

Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Hedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.