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 | |
|---|---|---|---|---|---|---|
|
KA
3701
CALL
DELISTED
Kineta, Inc. Common Stock
KA
| $406K | ﹤0.01% |
34
+32
| +1,600% | +$4.86K |
|
3702
CALL
Acco Brands
ACCO
$399M
| $405K | ﹤0.01% |
480
+440
| +1,100% | +$3.19K |
|
|
NGD
3703
CALL
DELISTED
New Gold Inc
NGD
| $405K | ﹤0.01% |
1,852
+719
| +63% | +$1.46K |
|
3704
Nu Skin
NUS
$256M
| $405K | ﹤0.01% |
+7,431
| New | +$391K |
|
|
SCS
3705
PUT
DELISTED
Steelcase
SCS
| $405K | ﹤0.01% |
299
-24
| -7% | -$294 |
|
3706
PUT
BGC Group
BGC
$5.69B
| $404K | ﹤0.01% |
1,010
-187
| -16% | -$654 |
|
3707
Phillips 66
PSX
$83B
| $404K | ﹤0.01% |
+5,783
| New | +$339K |
|
3708
PUT
O-I Glass
OI
$1.43B
| $403K | ﹤0.01% |
339
-974
| -74% | -$11.1K |
|
3709
SouthState Bank Corp
SSB
$10.3B
| $403K | ﹤0.01% |
5,583
+3,797
| +213% | +$249K |
|
3710
CALL
TFS Financial
TFSL
$5.15B
| $403K | ﹤0.01% |
229
+36
| +19% | +$599 |
|
|
EGOV
3711
CALL
DELISTED
NIC Inc
EGOV
| $402K | ﹤0.01% |
156
+3
| +2% | +$70 |
|
3712
CALL
Codexis
CDXS
$136M
| $401K | ﹤0.01% |
184
+174
| +1,740% | +$2.86K |
|
3713
SSR Mining
SSRM
$5.29B
| $401K | ﹤0.01% |
+19,986
| New | +$381K |
|
3714
CALL
Teekay Tankers
TNK
$2.66B
| $401K | ﹤0.01% |
365
+56
| +18% | +$620 |
|
3715
CALL
United States Gasoline Fund
UGA
$142M
| $401K | ﹤0.01% |
165
-161
| -49% | -$3.35K |
|
3716
PUT
Brookfield
BN
$104B
| $400K | ﹤0.01% |
181
-1,960
| -92% | -$39.2K |
|
3717
Cigna
CI
$79.9B
| $400K | ﹤0.01% |
1,922
-187
| -9% | -$36.7K |
|
3718
PUT
KNOT Offshore Partners
KNOP
$354M
| $400K | ﹤0.01% |
266
+11
| +4% | +$154 |
|
3719
PUT
Signet Jewelers
SIG
$3.77B
| $400K | ﹤0.01% |
147
-258
| -64% | -$6.59K |
|
3720
Sasol
SSL
$7.05B
| $400K | ﹤0.01% |
45,220
+36,224
| +403% | +$271K |
|
|
PLLL
3721
CALL
DELISTED
Piedmont Lithium Limited American Depositary Receipts
PLLL
| $400K | ﹤0.01% |
+151
| New | +$400K |
|
3722
CALL
Cooper Companies
COO
$14B
| $399K | ﹤0.01% |
44
+36
| +450% | +$3.09K |
|
3723
CALL
Energy Recovery
ERII
$435M
| $399K | ﹤0.01% |
293
-77
| -21% | -$821 |
|
|
GAN
3724
DELISTED
GAN Ltd
GAN
| $399K | ﹤0.01% |
19,709
+16,636
| +541% | +$279K |
|
3725
PUT
Global Net Lease
GNL
$1.88B
| $399K | ﹤0.01% |
233
+207
| +796% | +$3.38K |
|
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.