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 | |
|---|---|---|---|---|---|---|
801
PUT
Walt Disney
DIS
$161B
| $399K | 0.02% |
4,610
+1,188
| +35% | +$131K |
|
802
Quanta Services
PWR
$97.1B
| $399K | 0.02% |
10,754
-654
| -6% | -$23.9K |
|
803
Royal Bank of Canada
RY
$290B
| $399K | 0.02% |
+5,473
| New | +$397K |
|
|
AET
804
PUT
DELISTED
Aetna Inc
AET
| $399K | 0.02% |
1,979
+36
| +2% | +$4.52K |
|
805
Match Group
MTCH
$8.6B
| $398K | 0.02% |
24,432
-464
| -2% | -$7.94K |
|
806
Dave & Buster's
PLAY
$339M
| $398K | 0.02% |
6,516
+2,494
| +62% | +$142K |
|
807
CALL
Best Buy
BBY
$17.9B
| $397K | 0.02% |
1,034
+491
| +90% | +$21.9K |
|
808
Lazard
LAZ
$4.12B
| $397K | 0.02% |
+8,639
| New | +$373K |
|
|
EXAS
809
CALL
DELISTED
Exact Sciences
EXAS
| $395K | 0.02% |
930
+66
| +8% | +$1.31K |
|
810
CALL
Truist Financial
TFC
$62.1B
| $394K | 0.02% |
2,083
+305
| +17% | +$14.3K |
|
|
CAVM
811
DELISTED
Cavium, Inc.
CAVM
| $393K | 0.02% |
+5,488
| New | +$367K |
|
812
iShares MSCI United Kingdom ETF
EWU
$4B
| $392K | 0.02% |
12,062
-25,832
| -68% | -$821K |
|
|
CAMP
813
DELISTED
CalAmp Corp.
CAMP
| $392K | 0.02% |
1,015
-20
| -2% | -$7.25K |
|
814
CALL
ExxonMobil
XOM
$654B
| $391K | 0.02% |
5,301
+1,738
| +49% | +$145K |
|
|
CY
815
DELISTED
Cypress Semiconductor
CY
| $390K | 0.02% |
28,368
+19,717
| +228% | +$252K |
|
816
CALL
Altisource Portfolio Solutions
ASPS
$67.7M
| $388K | 0.02% |
40
+35
| +700% | +$7.75K |
|
|
LKM
817
DELISTED
Link Motion Inc.
LKM
| $388K | 0.02% |
+93,251
| New | +$350K |
|
818
Cullen/Frost Bankers
CFR
$10.1B
| $387K | 0.02% |
+4,357
| New | +$392K |
|
|
EMES
819
PUT
DELISTED
Emerge Energy Services LP
EMES
| $387K | 0.02% |
2,029
+1,832
| +930% | +$29.5K |
|
|
MZOR
820
DELISTED
Mazor Robotics Ltd.
MZOR
| $387K | 0.02% |
13,013
+12,476
| +2,323% | +$294K |
|
821
PUT
Walmart Inc
WMT
$859B
| $386K | 0.02% |
10,830
+4,116
| +61% | +$94.7K |
|
|
NXGN
822
DELISTED
NextGen Healthcare, Inc. Common Stock
NXGN
| $385K | 0.02% |
25,299
+11,361
| +82% | +$167K |
|
823
CALL
Darden Restaurants
DRI
$22.2B
| $384K | 0.02% |
434
-239
| -36% | -$17.9K |
|
|
SGYP
824
DELISTED
Synergy Pharmaceuticals, Inc Common Stock
SGYP
| $384K | 0.02% |
82,495
+12,766
| +18% | +$74K |
|
|
CAB
825
PUT
DELISTED
Cabela's Inc
CAB
| $384K | 0.02% |
440
-218
| -33% | -$11.2K |
|
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.