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 | |
|---|---|---|---|---|---|---|
2926
CALL
Autoliv
ALV
$8.6B
| $746K | ﹤0.01% |
81
+11
| +16% | +$951 |
|
|
HIMX
2927
CALL
Himax Technologies
HIMX
$2.2B
| $746K | ﹤0.01% |
1,010
-206
| -17% | -$1.05K |
|
|
LNW
2928
CALL
DELISTED
Light & Wonder
LNW
| $746K | ﹤0.01% |
180
-173
| -49% | -$6.37K |
|
|
PE
2929
PUT
DELISTED
PARSLEY ENERGY INC
PE
| $746K | ﹤0.01% |
526
-695
| -57% | -$8.27K |
|
|
ACRE
2930
CALL
Ares Commercial Real Estate
ACRE
$252M
| $745K | ﹤0.01% |
626
+288
| +85% | +$3.08K |
|
2931
CALL
Royalty Pharma
RPRX
$26.1B
| $745K | ﹤0.01% |
149
-28
| -16% | -$1.19K |
|
|
EVRI
2932
DELISTED
Everi Holdings
EVRI
| $743K | ﹤0.01% |
53,845
+43,115
| +402% | +$468K |
|
2933
PUT
ResMed
RMD
$28.3B
| $743K | ﹤0.01% |
35
-130
| -79% | -$25.9K |
|
|
IMGN
2934
CALL
DELISTED
Immunogen Inc
IMGN
| $743K | ﹤0.01% |
1,152
+503
| +78% | +$2.93K |
|
|
SAFE
2935
CALL
Safehold
SAFE
$1.19B
| $742K | ﹤0.01% |
103
+62
| +151% | +$4.04K |
|
2936
ProShares Short 20+ Year Treasury ETF
TBF
$84.9M
| $741K | ﹤0.01% |
46,996
+18,208
| +63% | +$286K |
|
2937
CALL
TriNet
TNET
$2.84B
| $741K | ﹤0.01% |
92
+30
| +48% | +$2.22K |
|
|
BDN
2938
CALL
Brandywine Realty Trust
BDN
$551M
| $740K | ﹤0.01% |
622
+607
| +4,047% | +$6.52K |
|
2939
Citizens Financial Group
CFG
$30.4B
| $740K | ﹤0.01% |
+20,710
| New | +$650K |
|
2940
Tronox
TROX
$995M
| $740K | ﹤0.01% |
50,647
+24,228
| +92% | +$282K |
|
2941
Veeco
VECO
$3.15B
| $740K | ﹤0.01% |
42,643
+13,229
| +45% | +$202K |
|
|
PTR
2942
PUT
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
| $740K | ﹤0.01% |
241
-139
| -37% | -$4.25K |
|
2943
Advance Auto Parts
AAP
$3.37B
| $739K | ﹤0.01% |
4,693
-6,931
| -60% | -$1.07M |
|
2944
PUT
KALA BIO
KALA
$11.8M
| – | – |
0
| – | – |
|
2945
CALL
Envista
NVST
$4.28B
| $738K | ﹤0.01% |
219
+143
| +188% | +$4.15K |
|
2946
PUT
Transocean
RIG
$5.92B
| $738K | ﹤0.01% |
3,197
-395
| -11% | -$581 |
|
2947
PUT
The GEO Group
GEO
$4.13B
| $737K | ﹤0.01% |
832
+217
| +35% | +$2.08K |
|
2948
CALL
Trinity Industries
TRN
$2.97B
| $736K | ﹤0.01% |
279
+8
| +3% | +$180 |
|
2949
CALL
Voya Financial
VOYA
$8.94B
| $735K | ﹤0.01% |
125
-237
| -65% | -$12.8K |
|
|
CVET
2950
PUT
DELISTED
Covetrus, Inc. Common Stock
CVET
| $735K | ﹤0.01% |
256
-8
| -3% | -$216 |
|
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.