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 | |
|---|---|---|---|---|---|---|
|
BLDP
2951
PUT
Ballard Power Systems
BLDP
$859M
| $734K | ﹤0.01% |
314
-377
| -55% | -$6.94K |
|
|
CLCT
2952
DELISTED
Collectors Universe
CLCT
| $734K | ﹤0.01% |
9,738
-5,649
| -37% | -$383K |
|
2953
Enbridge
ENB
$122B
| $732K | ﹤0.01% |
22,900
+22,875
| +91,500% | +$696K |
|
2954
CALL
Immersion
IMMR
$247M
| $732K | ﹤0.01% |
649
+485
| +296% | +$3.84K |
|
2955
CenterPoint Energy
CNP
$29B
| $731K | ﹤0.01% |
33,799
+32,294
| +2,146% | +$716K |
|
2956
CALL
Invesco CurrencyShares Japanese Yen Trust
FXY
$426M
| $731K | ﹤0.01% |
80
-114
| -59% | -$10.3K |
|
2957
PUT
Republic Services
RSG
$66.8B
| $731K | ﹤0.01% |
76
+64
| +533% | +$6.09K |
|
2958
PUT
Kodak
KODK
$799M
| $730K | ﹤0.01% |
898
-557
| -38% | -$4.64K |
|
|
GLDD
2959
CALL
DELISTED
Great Lakes Dredge & Dock
GLDD
| $729K | ﹤0.01% |
554
+275
| +99% | +$3.08K |
|
|
RWT
2960
CALL
Redwood Trust
RWT
$621M
| $729K | ﹤0.01% |
831
-1,507
| -64% | -$13K |
|
2961
PUT
Perrigo
PRGO
$1.45B
| $728K | ﹤0.01% |
163
-254
| -61% | -$11.8K |
|
2962
CALL
Jones Lang LaSalle
JLL
$15.4B
| $727K | ﹤0.01% |
49
+39
| +390% | +$5.01K |
|
2963
ING
ING
$95.6B
| $726K | ﹤0.01% |
76,907
+66,210
| +619% | +$568K |
|
2964
PUT
Stride
LRN
$3.8B
| $726K | ﹤0.01% |
342
-90
| -21% | -$2.23K |
|
|
LHCG
2965
CALL
DELISTED
LHC Group LLC
LHCG
| $725K | ﹤0.01% |
34
-11
| -24% | -$2.34K |
|
|
PRFT
2966
CALL
DELISTED
Perficient Inc
PRFT
| $724K | ﹤0.01% |
152
-13
| -8% | -$590 |
|
|
CONE
2967
CALL
DELISTED
CyrusOne Inc Common Stock
CONE
| $724K | ﹤0.01% |
99
+44
| +80% | +$3.19K |
|
2968
CALL
Evercore
EVR
$13.1B
| $723K | ﹤0.01% |
66
+10
| +18% | +$890 |
|
2969
PUT
Equity Lifestyle Properties
ELS
$12.7B
| $722K | ﹤0.01% |
114
-38
| -25% | -$2.34K |
|
|
MIME
2970
PUT
DELISTED
Mimecast Limited
MIME
| $721K | ﹤0.01% |
127
+126
| +12,600% | +$5.83K |
|
2971
CALL
First Bancorp
FBP
$4.43B
| $720K | ﹤0.01% |
781
+274
| +54% | +$2.09K |
|
2972
Vanguard FTSE Emerging Markets ETF
VWO
$119B
| $720K | ﹤0.01% |
+14,373
| New | +$675K |
|
|
DS
2973
PUT
DELISTED
Drive Shack Inc.
DS
| $720K | ﹤0.01% |
3,026
+2,647
| +698% | +$4.68K |
|
2974
CALL
Vicor
VICR
$9.24B
| $719K | ﹤0.01% |
78
-95
| -55% | -$7.98K |
|
|
SOLO
2975
PUT
DELISTED
Electrameccanica Vehicles Corp. Ltd.
SOLO
| $718K | ﹤0.01% |
1,160
+878
| +311% | +$4.55K |
|
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.