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 | |
|---|---|---|---|---|---|---|
826
CALL
Shake Shack
SHAK
$2.3B
| $218K | 0.02% |
305
-28
| -8% | -$1.23K |
|
827
PUT
Humana
HUM
$46.7B
| $217K | 0.02% |
256
-128
| -33% | -$22.5K |
|
828
PUT
United Parcel Service
UPS
$97.6B
| $217K | 0.02% |
548
-354
| -39% | -$36.2K |
|
|
WPRT
829
PUT
Westport Fuel Systems
WPRT
$36.5M
| $217K | 0.02% |
11
| – | – |
|
|
ANFI
830
DELISTED
AMIRA NATURE FOODS LTD
ANFI
| $217K | 0.02% |
23,845
+4,989
| +26% | +$36K |
|
|
WPZ
831
PUT
DELISTED
Williams Partners L.P.
WPZ
| $217K | 0.02% |
601
+385
| +178% | +$11.6K |
|
832
Qorvo
QRVO
$7.63B
| $216K | 0.02% |
4,251
+807
| +23% | +$41.3K |
|
|
GLF
833
DELISTED
GulfMark Offshore, Inc. Common Stock
GLF
| $216K | 0.02% |
46,337
+39,961
| +627% | +$245K |
|
834
CALL
Adobe
ADBE
$89.5B
| $215K | 0.02% |
299
-47
| -14% | -$4.22K |
|
835
PUT
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $215K | 0.02% |
1,387
+42
| +3% | +$4.51K |
|
836
PUT
Illumina
ILMN
$29.4B
| $215K | 0.02% |
309
+76
| +33% | +$12.3K |
|
837
NETGEAR
NTGR
$669M
| $215K | 0.02% |
5,151
+4,588
| +815% | +$185K |
|
838
CALL
Dollar Tree
DLTR
$23.1B
| $214K | 0.02% |
574
+454
| +378% | +$31.7K |
|
839
AllianceBernstein
AB
$3.47B
| $213K | 0.02% |
8,936
+7,629
| +584% | +$192K |
|
840
iShares MSCI EAFE ETF
EFA
$76.4B
| $213K | 0.02% |
3,643
-173,164
| -98% | -$10.4M |
|
841
Hilton Worldwide
HLT
$74B
| $213K | 0.02% |
3,330
-107
| -3% | -$7.6K |
|
842
PUT
LyondellBasell Industries
LYB
$19.5B
| $213K | 0.02% |
411
+55
| +15% | +$5.06K |
|
|
TCS
843
PUT
DELISTED
THE CONTAINER STORE GROUP, INC.
TCS
| $213K | 0.02% |
19
+13
| +217% | +$2.1K |
|
844
CALL
AbbVie
ABBV
$458B
| $210K | 0.02% |
1,199
+463
| +63% | +$26.7K |
|
845
Ovintiv
OVV
$17.7B
| $210K | 0.02% |
8,263
+4,060
| +97% | +$148K |
|
|
WPG
846
DELISTED
Washington Prime Group Inc.
WPG
| $210K | 0.02% |
+2,208
| New | +$224K |
|
847
CALL
General Motors
GM
$74.7B
| $209K | 0.02% |
1,383
-44
| -3% | -$1.53K |
|
848
Vornado Realty Trust
VNO
$7.47B
| $209K | 0.02% |
2,596
+1,379
| +113% | +$109K |
|
|
BBBY
849
PUT
DELISTED
Bed Bath & Beyond Inc
BBBY
| $209K | 0.02% |
534
-133
| -20% | -$7.39K |
|
|
LVLT
850
CALL
DELISTED
Level 3 Communications Inc
LVLT
| $209K | 0.02% |
553
+203
| +58% | +$10.2K |
|
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.