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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1001
PUT
RTX Corp
RTX
$282B
| $285K | 0.01% |
3,917
-539
| -12% | -$37.8K |
|
1002
PUT
Norfolk Southern
NSC
$78.3B
| $284K | 0.01% |
846
+356
| +73% | +$41.6K |
|
|
YHOO
1003
DELISTED
Yahoo Inc
YHOO
| $284K | 0.01% |
+6,123
| New | +$273K |
|
1004
CALL
Cleveland-Cliffs
CLF
$6.25B
| $282K | 0.01% |
2,184
-654
| -23% | -$6.21K |
|
1005
Ambarella
AMBA
$3.09B
| $280K | 0.01% |
+5,135
| New | +$277K |
|
1006
CALL
Expedia Group
EXPE
$30.9B
| $279K | 0.01% |
580
-797
| -58% | -$97.3K |
|
|
RDUS
1007
PUT
DELISTED
Radius Health, Inc.
RDUS
| $279K | 0.01% |
808
+166
| +26% | +$6.96K |
|
1008
CALL
Bausch Health
BHC
$1.66B
| $278K | 0.01% |
3,419
-4,387
| -56% | -$60.4K |
|
|
CLR
1009
PUT
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $278K | 0.01% |
967
+403
| +71% | +$19K |
|
|
IMMU
1010
DELISTED
Immunomedics Inc
IMMU
| $278K | 0.01% |
43,115
+31,523
| +272% | +$160K |
|
|
STI
1011
DELISTED
SunTrust Banks, Inc.
STI
| $277K | 0.01% |
+5,020
| New | +$288K |
|
1012
Adeia
ADEA
$2.97B
| $276K | 0.01% |
30,799
+23,628
| +329% | +$254K |
|
1013
American Vanguard Corp
AVD
$72.4M
| $276K | 0.01% |
+16,663
| New | +$277K |
|
1014
CALL
YPF
YPF
$20.4B
| $276K | 0.01% |
1,131
+260
| +30% | +$5.6K |
|
1015
CALL
Illumina
ILMN
$29.8B
| $275K | 0.01% |
134
-390
| -74% | -$61.4K |
|
|
JWN
1016
PUT
DELISTED
Nordstrom
JWN
| $275K | 0.01% |
833
+421
| +102% | +$18.8K |
|
|
ENV
1017
DELISTED
ENVESTNET, INC.
ENV
| $275K | 0.01% |
+8,532
| New | +$310K |
|
1018
Criteo
CRTO
$1.05B
| $273K | 0.01% |
+5,472
| New | +$256K |
|
|
HES
1019
DELISTED
Hess
HES
| $273K | 0.01% |
5,673
-41,906
| -88% | -$2.22M |
|
|
CHK
1020
DELISTED
Chesapeake Energy Corporation
CHK
| $273K | 0.01% |
230
+174
| +311% | +$211K |
|
|
HABT
1021
DELISTED
The Habit Restaurants, Inc. - Class A
HABT
| $273K | 0.01% |
15,424
+3,522
| +30% | +$53.6K |
|
1022
Chemours
CC
$2.63B
| $272K | 0.01% |
+7,079
| New | +$213K |
|
1023
PUT
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $272K | 0.01% |
1,231
-1,609
| -57% | -$166K |
|
1024
Deere & Co
DE
$165B
| $271K | 0.01% |
+2,493
| New | +$270K |
|
1025
PUT
Devon Energy
DVN
$52.2B
| $271K | 0.01% |
1,239
-994
| -45% | -$43.7K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.