LMR Partners LLP
SEC Form 13F institutional filer · CIK 0001578621
13F-HR · 230 reported holdings · 2026-03-31
SEC-registered institutional investment manager.
Reported long-US-equity value
$3.76B
Top-10 concentration
54.7%
LMR Partners LLP — $3.76B AUM allocation strategy
LMR Partners LLP files SEC Form 13F and reports $3.76B of long US equity value across 230 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 19.5%, followed by Communication Services 10.2% and Health Care 3.4%.
The top 10 holdings account for 55% of reported value — a conviction-weighted book concentrated in its best ideas. The sector and industry splits below are of the same reported value. Track quarter-over-quarter adds, trims, new positions and exits below — sourced from SEC 13F filings, public domain.
LMR Partners LLP — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$3.76B
total across 230 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
55% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$AES +3.67M sh · +$51.7M+$WBD +2.34M sh · +$58.2M+$KVUE +826K sh · +$14.2M
Biggest trims (shares)
−$NVDA −786K sh · −$159M−$PFE −467K sh · −$11.5M−$AMZN −334K sh · −$77.4M
Exited to nil (held last quarter, gone now)
$IWM ($35.7M last qtr)$ACN ($26.8M last qtr)$CVNA ($25.3M last qtr)$COF ($21.8M last qtr)$UDR ($19.6M last qtr)
Sector allocation (share of reported value)
each slice is a share of the reported long-US-equity value — smaller sectors and the rest of the book roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Industry allocation (share of reported value)
- Semiconductors12.5%—
- Broadcasting5.0%—
- Wireless Telecommunication Services3.6%—
- Rail Transportation3.3%—
- Technology Hardware, Storage & Peripherals3.0%—
- Asset Management & Custody Banks2.4%—
- Communications Equipment2.3%—
- Personal Care Products2.3%—
- Other holdings65.6%—
the finer GICS cut of the same book — same denominator — smaller industries roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Top S&P 500 holdings
8 of 8 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $WBD | Warner Bros. Discovery Inc. Series A | 6.81M | $187M | +2.34M | 5.0% |
| $NVDA | NVIDIA Corporation | 1.01M | $175M | -786K | 4.7% |
| $MU | Micron Technology Inc | 483K | $163M | +156K | 4.3% |
| $ECHO | EchoStar Corporation | 1.17M | $137M | -45.8K | 3.6% |
| $AVGO | Broadcom Inc | 421K | $130M | -49.1K | 3.5% |
| $NSC | Norfolk Southern Corporation | 435K | $125M | +127K | 3.3% |
| $BLK | BlackRock Inc | 273K | $89.9M | -7.21K | 2.4% |
| $MSI | Motorola Solutions Inc | 200K | $86.8M | — | 2.3% |
…and 222 more holdings in the full 13F filing (top positions only shown).
SEC Form 13F data sets · public domain · 45-day filing lag · >$100M AUM managers · as reported
← All 13F filers·← QuantOrb.pro
How to read Δ QoQ — the five insight categories, and the caveats
The categories. Analysts, quants and retail traders look past total portfolio value to isolate actionable signals. Five categories matter.
Conviction & concentration shifts
New positions vs complete exits — a brand-new stock signals high conviction; a full liquidation suggests a broken thesis or tax-loss harvesting. Aggressive sizing — look at share count, not dollars: a 20% share increase during a drawdown is strong dip-buying. Concentration — a narrowing top-5/10 means conviction; spreading capital across more names means hedging.
Sector & macro allocation rotations
Aggregating Δ QoQ moves across sectors shows where smart money is leaning in or sneaking out — rotating out of growth into defensives or energy, for example. The fund's total long equity exposure quarter-over-quarter is a proxy for overall institutional risk appetite.
Crowding & smart-money consensus
When several managers initiate or expand the same stock in the same quarter, that is institutional consensus. Contrarian reads: top pickers buying hard into a beaten-down name the market is selling.
Derivative & option overlays
Reported call/put changes indicate whether managers are adding downside hedges or leveraging upside exposure. Note: a long increase may be half of a market-neutral pair trade.
Who reads this
| Retail "cloners" | High-conviction ideas to replicate ~45 days after quarter-end. |
| Corporate IR | Which funds bought or dumped the stock, before the next call. |
| Quant / algo traders | Cross-sectional factor inputs: flow, momentum, ownership. |
Four caveats before you trade on it
- 45-day lag — holdings are quarter-end; positions may already be closed.
- Long-only — 13Fs miss shorts, pair trades and cash.
- No non-US / fixed income — the picture is US equities plus options.
- Corporate actions — splits and spinoffs distort raw share deltas.
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