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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2851
CALL
Itron
ITRI
$3.73B
| $558K | ﹤0.01% |
92
+88
| +2,200% | +$5.59K |
|
2852
PUT
Takeda Pharmaceutical
TAK
$55.1B
| $558K | ﹤0.01% |
313
-6
| -2% | -$109 |
|
|
GSS
2853
CALL
DELISTED
Golden Star Resources Ltd.
GSS
| $558K | ﹤0.01% |
1,295
+1,033
| +394% | +$4.3K |
|
2854
Loews
L
$24.3B
| $556K | ﹤0.01% |
+16,001
| New | +$574K |
|
2855
CALL
Prospect Capital
PSEC
$1.06B
| $556K | ﹤0.01% |
1,107
-170
| -13% | -$855 |
|
2856
CALL
Gildan
GIL
$9.25B
| $554K | ﹤0.01% |
282
+199
| +240% | +$3.68K |
|
2857
PUT
Nabors Industries
NBR
$1.23B
| $554K | ﹤0.01% |
227
-10
| -4% | -$367 |
|
2858
SLM Corp
SLM
$4.57B
| $554K | ﹤0.01% |
68,533
-16,826
| -20% | -$123K |
|
2859
PUT
Zymeworks
ZYME
$1.68B
| $554K | ﹤0.01% |
119
| – | – |
|
|
XEC
2860
PUT
DELISTED
CIMAREX ENERGY CO
XEC
| $554K | ﹤0.01% |
228
-86
| -27% | -$2.27K |
|
2861
CALL
Guidewire Software
GWRE
$11.5B
| $552K | ﹤0.01% |
53
-23
| -30% | -$2.58K |
|
2862
PUT
Ligand Pharmaceuticals
LGND
$6.02B
| $552K | ﹤0.01% |
93
-348
| -79% | -$23.7K |
|
2863
PUT
Zions Bancorporation
ZION
$10.1B
| $552K | ﹤0.01% |
189
-68
| -26% | -$2.19K |
|
|
ISEE
2864
CALL
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $552K | ﹤0.01% |
980
+910
| +1,300% | +$4.34K |
|
|
CLVS
2865
PUT
DELISTED
Clovis Oncology, Inc.
CLVS
| $552K | ﹤0.01% |
947
-1,052
| -53% | -$6.29K |
|
2866
PUT
Antero Resources
AR
$10.9B
| $550K | ﹤0.01% |
2,000
+976
| +95% | +$3.09K |
|
2867
Lowe's Companies
LOW
$116B
| $550K | ﹤0.01% |
+3,322
| New | +$512K |
|
|
LX
2868
PUT
LexinFintech Holdings
LX
$244M
| $550K | ﹤0.01% |
804
+594
| +283% | +$5.16K |
|
|
JOBS
2869
DELISTED
51job Inc
JOBS
| $550K | ﹤0.01% |
7,059
+6,527
| +1,227% | +$453K |
|
2870
CALL
AGCO
AGCO
$8.78B
| $549K | ﹤0.01% |
74
+31
| +72% | +$2.11K |
|
2871
ARK Autonomous Technology & Robotics ETF
ARKQ
$1.88B
| $549K | ﹤0.01% |
+9,582
| New | +$525K |
|
2872
PUT
Lamar Advertising Co
LAMR
$16.2B
| $549K | ﹤0.01% |
83
-250
| -75% | -$16.6K |
|
2873
PUT
Nordic American Tanker
NAT
$1.37B
| $549K | ﹤0.01% |
1,574
-1,938
| -55% | -$8.08K |
|
2874
CALL
Chefs' Warehouse
CHEF
$3.87B
| $548K | ﹤0.01% |
377
+275
| +270% | +$3.92K |
|
2875
MP Materials
MP
$7.35B
| $548K | ﹤0.01% |
+40,426
| New | +$511K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.