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 | |
|---|---|---|---|---|---|---|
4651
Ardmore Shipping
ASC
$703M
| $124K | ﹤0.01% |
35,086
+26,326
| +301% | +$103K |
|
4652
KE Holdings
BEKE
$18.8B
| $124K | ﹤0.01% |
+2,030
| New | +$101K |
|
4653
PUT
Camden Property Trust
CPT
$11.2B
| $124K | ﹤0.01% |
14
+13
| +1,300% | +$1.17K |
|
4654
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$45.5B
| $124K | ﹤0.01% |
450
| – | – |
|
4655
PUT
Federated Hermes
FHI
$4.51B
| $124K | ﹤0.01% |
58
+4
| +7% | +$95 |
|
4656
CALL
Heartland Express
HTLD
$986M
| $124K | ﹤0.01% |
+67
| New | +$1.36K |
|
|
EVBG
4657
DELISTED
Everbridge, Inc. Common Stock
EVBG
| $124K | ﹤0.01% |
994
-1,995
| -67% | -$271K |
|
4658
Black Hills Corp
BKH
$5.5B
| $123K | ﹤0.01% |
+2,302
| New | +$131K |
|
4659
Ciena
CIEN
$52.7B
| $123K | ﹤0.01% |
3,119
+1,549
| +99% | +$81.5K |
|
|
CMCM
4660
PUT
Cheetah Mobile
CMCM
$88.5M
| $123K | ﹤0.01% |
121
-179
| -60% | -$1.95K |
|
4661
CALL
Cheniere Energy
CQP
$31.5B
| $123K | ﹤0.01% |
37
-679
| -95% | -$23.9K |
|
4662
PUT
Geron
GERN
$860M
| $123K | ﹤0.01% |
711
-38
| -5% | -$70 |
|
4663
PUT
Terex
TEX
$7.11B
| $123K | ﹤0.01% |
64
-100
| -61% | -$1.95K |
|
4664
PUT
AAR Corp
AIR
$5.56B
| $122K | ﹤0.01% |
65
+19
| +41% | +$362 |
|
4665
Barclays
BCS
$93.4B
| $122K | ﹤0.01% |
24,461
-115,356
| -83% | -$637K |
|
4666
Chefs' Warehouse
CHEF
$4.58B
| $122K | ﹤0.01% |
+8,428
| New | +$120K |
|
4667
PUT
Four Corners Property Trust
FCPT
$2.8B
| $122K | ﹤0.01% |
48
-35
| -42% | -$866 |
|
4668
GoPro
GPRO
$124M
| $122K | ﹤0.01% |
+27,150
| New | +$128K |
|
4669
PUT
LKQ Corp
LKQ
$5.76B
| $122K | ﹤0.01% |
44
-38
| -46% | -$1.12K |
|
4670
PUT
Medpace
MEDP
$16.1B
| $122K | ﹤0.01% |
11
-28
| -72% | -$3.24K |
|
4671
CALL
News Corp Class B
NWS
$17.2B
| $122K | ﹤0.01% |
88
-37
| -30% | -$516 |
|
|
PDCE
4672
CALL
DELISTED
PDC Energy, Inc.
PDCE
| $122K | ﹤0.01% |
99
-28
| -22% | -$399 |
|
|
CSII
4673
DELISTED
Cardiovascular Systems, Inc.
CSII
| $122K | ﹤0.01% |
+3,117
| New | +$101K |
|
|
COHR
4674
PUT
DELISTED
Coherent Inc
COHR
| $122K | ﹤0.01% |
11
-28
| -72% | -$3.39K |
|
4675
PUT
Brixmor Property Group
BRX
$9.67B
| $121K | ﹤0.01% |
104
+43
| +70% | +$519 |
|
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.