Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.8M |
| 2 |
Bausch Health
BHC
|
+$20.3M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$18.9M |
| 4 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$12.3M |
| 5 |
Amazon
AMZN
|
+$12.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Russell 2000 ETF
IWM
|
+$27.5M |
| 2 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$13.8M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$12.1M |
| 4 |
Netflix
NFLX
|
+$10.7M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$10.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 9.5% |
| 2 | Healthcare | 7.55% |
| 3 | Technology | 7.01% |
| 4 | Communication Services | 6.66% |
| 5 | Industrials | 5.76% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
501
PUT
American Express
AXP
$233B
| $411K | 0.03% |
697
-727
| -51% | -$52.9K |
|
502
United Parcel Service
UPS
$97B
| $411K | 0.03% |
+4,281
| New | +$437K |
|
503
AvalonBay Communities
AVB
$27.1B
| $410K | 0.03% |
+2,229
| New | +$399K |
|
504
PUT
Rio Tinto
RIO
$149B
| $410K | 0.03% |
497
+55
| +12% | +$1.86K |
|
505
ProShares Ultra Financials
UYG
$796M
| $410K | 0.03% |
17,364
+11,796
| +212% | +$283K |
|
506
PUT
Microsoft
MSFT
$2.83T
| $407K | 0.03% |
3,355
+259
| +8% | +$13.6K |
|
|
WW
507
CALL
DELISTED
WW International
WW
| $407K | 0.03% |
1,113
+963
| +642% | +$18.2K |
|
508
PUT
VanEck International High Yield Bond ETF
IHY
$42.9M
| $406K | 0.03% |
754
+310
| +70% | +$7.22K |
|
509
Direxion Daily Small Cap Bear 3x ETF
TZA
$210M
| $406K | 0.03% |
+23
| New | +$401K |
|
510
PUT
United Rentals
URI
$71.4B
| $405K | 0.03% |
420
-138
| -25% | -$9.97K |
|
|
TCS
511
DELISTED
THE CONTAINER STORE GROUP, INC.
TCS
| $405K | 0.03% |
3,295
+3,085
| +1,469% | +$498K |
|
|
ETP
512
PUT
DELISTED
Energy Transfer Partners L.p.
ETP
| $405K | 0.03% |
1,080
+758
| +235% | +$29.7K |
|
513
PUT
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$107M
| $404K | 0.03% |
1,766
-670
| -28% | -$12.9K |
|
|
HAPN
514
Happen Inc
HAPN
$2.07B
| $403K | 0.03% |
+7,305
| New | +$485K |
|
|
SOHU
515
Sohu.com
SOHU
$331M
| $403K | 0.03% |
+7,056
| New | +$357K |
|
516
Entergy
ETR
$54B
| $400K | 0.03% |
11,728
-4,686
| -29% | -$157K |
|
517
PUT
Morgan Stanley
MS
$338B
| $399K | 0.03% |
729
-25
| -3% | -$831 |
|
518
PUT
The Mosaic Company
MOS
$7.08B
| $398K | 0.03% |
820
+320
| +64% | +$10.2K |
|
519
PUT
Ambarella
AMBA
$3.09B
| $397K | 0.03% |
616
+111
| +22% | +$6.26K |
|
|
UWC
520
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $397K | 0.03% |
951
-242
| -20% | -$101K |
|
521
PUT
Avis
CAR
$5.62B
| $396K | 0.03% |
377
+238
| +171% | +$10K |
|
522
Autohome
ATHM
$2.45B
| $395K | 0.03% |
+11,317
| New | +$381K |
|
523
Royal Bank of Canada
RY
$290B
| $394K | 0.03% |
+7,354
| New | +$412K |
|
524
Estee Lauder
EL
$28.9B
| $393K | 0.03% |
4,467
+5
| +0.1% | +$426 |
|
525
IQVIA
IQV
$34.6B
| $393K | 0.03% |
+5,736
| New | +$392K |
|
Similar funds
Simplex Trading's Q4 2015 Portfolio in Review
As of Q4 2015, Simplex Trading held 7,008 positions worth $1.28B, down 6.4% from $1.36B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading's Q4 2015 filing shows 1,417 new, 1,993 increased, 1,803 reduced and 1,598 closed positions. Its largest new stake was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M. The largest sale was iShares Russell 2000 ETF, an estimated $27.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 9.5% of assets, up from 4.6% a quarter earlier, followed by Healthcare and Technology.
- Simplex Trading's largest Q4 2015 buy was Chipotle Mexican Grill: 1,548,150 shares worth $14.9M.
- Simplex Trading added most to Apple in Q4 2015, an estimated $34.8M increase.
- Simplex Trading's biggest Q4 2015 reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, cutting an estimated $13.8M.
- Simplex Trading fully exited iShares Russell 2000 ETF in Q4 2015, selling an estimated $27.5M.
- Simplex Trading's ten largest holdings make up 19% of its $1.28B portfolio in Q4 2015.
- Simplex Trading opened 1,417 new positions and closed 1,598 in Q4 2015.
- Simplex Trading's portfolio value fell 6.4% quarter-over-quarter to $1.28B.
Based on Simplex Trading's 13F filing for Q4 2015, filed 20 Jan 2016.