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 |
Alibaba
BABA
|
+$39.9M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$39M |
| 3 |
Mastercard
MA
|
+$31.3M |
| 4 |
Apple
AAPL
|
+$25.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$25.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
JPMorgan Chase
JPM
|
+$52.8M |
| 2 |
TSMC
TSM
|
+$43M |
| 3 |
Amazon
AMZN
|
+$24.7M |
| 4 |
iShares Silver Trust
SLV
|
+$24.2M |
| 5 |
Netflix
NFLX
|
+$21.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.65% |
| 2 | Technology | 0.37% |
| 3 | Healthcare | 0.33% |
| 4 | Industrials | 0.21% |
| 5 | Communication Services | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
NGHC
3051
PUT
DELISTED
National General Holdings Corp
NGHC
| $680K | ﹤0.01% |
199
+194
| +3,880% | +$6.61K |
|
|
OPLN
3052
CALL
Openlane
OPLN
$4.25B
| $677K | ﹤0.01% |
364
-55
| -13% | -$949 |
|
|
RPAI
3053
CALL
DELISTED
RETAIL PROPERTIES OF AMERICA, INC.
RPAI
| $677K | ﹤0.01% |
792
+725
| +1,082% | +$5.29K |
|
3054
Brighthouse Financial
BHF
$3.65B
| $676K | ﹤0.01% |
+18,698
| New | +$628K |
|
3055
PUT
Northern Oil and Gas
NOG
$2.23B
| $676K | ﹤0.01% |
772
+34
| +5% | +$211 |
|
3056
CALL
ATI
ATI
$25.9B
| $675K | ﹤0.01% |
403
-381
| -49% | -$4.84K |
|
3057
CALL
Brookfield Renewable
BEPC
$5.91B
| $675K | ﹤0.01% |
88
+83
| +1,660% | +$3.99K |
|
|
IBTX
3058
CALL
DELISTED
Independent Bank Group, Inc.
IBTX
| $675K | ﹤0.01% |
108
-128
| -54% | -$7.08K |
|
3059
ProShares Short S&P500
SH
$917M
| $674K | ﹤0.01% |
9,380
+5,249
| +127% | +$401K |
|
|
VG
3060
DELISTED
Vonage Holdings Corporation
VG
| $674K | ﹤0.01% |
52,389
-35,986
| -41% | -$438K |
|
|
SAFE
3061
CALL
DELISTED
Safehold Inc.
SAFE
| $674K | ﹤0.01% |
93
-35
| -27% | -$2.39K |
|
3062
CALL
Boise Cascade
BCC
$2.75B
| $673K | ﹤0.01% |
141
+133
| +1,663% | +$5.78K |
|
3063
PBF Energy
PBF
$7.34B
| $672K | ﹤0.01% |
94,653
+54,020
| +133% | +$352K |
|
|
BIG
3064
DELISTED
Big Lots, Inc.
BIG
| $672K | ﹤0.01% |
15,662
-5,200
| -25% | -$253K |
|
3065
PUT
B2Gold
BTG
$5.13B
| $671K | ﹤0.01% |
1,199
+954
| +389% | +$5.83K |
|
3066
PUT
Franklin Electric
FELE
$4.65B
| $671K | ﹤0.01% |
97
+90
| +1,286% | +$5.94K |
|
|
SWN
3067
PUT
DELISTED
Southwestern Energy Company
SWN
| $671K | ﹤0.01% |
2,256
+1,683
| +294% | +$4.96K |
|
3068
PUT
Renaissance IPO ETF
IPO
$156M
| $670K | ﹤0.01% |
104
+94
| +940% | +$5.55K |
|
|
MASI
3069
CALL
DELISTED
Masimo
MASI
| $670K | ﹤0.01% |
25
-11
| -31% | -$2.74K |
|
3070
CALL
Ryanair
RYAAY
$29.9B
| $670K | ﹤0.01% |
153
+98
| +178% | +$3.85K |
|
|
NTR
3071
CALL
DELISTED
NEW YORK MORTGAGE TRUST INC
NTR
| $670K | ﹤0.01% |
1,816
+879
| +94% | +$324K |
|
3072
CALL
BJ's Restaurants
BJRI
$1.43B
| $669K | ﹤0.01% |
174
-217
| -55% | -$7.4K |
|
3073
CALL
Apple Hospitality REIT
APLE
$3.97B
| $668K | ﹤0.01% |
518
+352
| +212% | +$4.18K |
|
3074
CALL
Carter's
CRI
$1.41B
| $667K | ﹤0.01% |
71
+39
| +122% | +$3.43K |
|
3075
PUT
Carriage Services
CSV
$634M
| $667K | ﹤0.01% |
213
-63
| -23% | -$1.72K |
|
Similar funds
Simplex Trading's Q4 2020 Portfolio in Review
As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading's Q4 2020 filing shows 1,711 new, 3,402 increased, 3,106 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
- Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
- Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
- Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
- Simplex Trading opened 1,711 new positions and closed 1,157 in Q4 2020.
- Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.
Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.