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 | |
|---|---|---|---|---|---|---|
3501
LendingTree
TREE
$564M
| $473K | ﹤0.01% |
1,729
+316
| +22% | +$93.9K |
|
3502
PUT
Canadian National Railway
CNI
$78B
| $472K | ﹤0.01% |
43
+4
| +10% | +$432 |
|
3503
Infosys
INFY
$47.4B
| $472K | ﹤0.01% |
+27,902
| New | +$427K |
|
|
LX
3504
LexinFintech Holdings
LX
$241M
| $472K | ﹤0.01% |
70,481
+13,625
| +24% | +$97.4K |
|
3505
TG Therapeutics
TGTX
$8.53B
| $472K | ﹤0.01% |
9,076
-37,745
| -81% | -$1.28M |
|
|
BCOV
3506
CALL
DELISTED
Brightcove, Inc.
BCOV
| $472K | ﹤0.01% |
257
+174
| +210% | +$2.48K |
|
|
CONN
3507
CALL
DELISTED
Conn's Inc.
CONN
| $472K | ﹤0.01% |
404
+215
| +114% | +$2.45K |
|
|
DOG
3508
ProShares Short Dow30
DOG
$110M
| $470K | ﹤0.01% |
12,008
-3,441
| -22% | -$143K |
|
|
OPLN
3509
PUT
Openlane
OPLN
$4.25B
| $470K | ﹤0.01% |
253
-73
| -22% | -$1.26K |
|
|
GLUU
3510
PUT
DELISTED
Glu Mobile Inc.
GLUU
| $469K | ﹤0.01% |
521
+177
| +51% | +$1.53K |
|
3511
B2Gold
BTG
$5.16B
| $467K | ﹤0.01% |
83,553
+44,303
| +113% | +$271K |
|
3512
PUT
Galicia Financial Group
GGAL
$8.03B
| $467K | ﹤0.01% |
535
+30
| +6% | +$237 |
|
|
PMT
3513
PUT
PennyMac Mortgage Investment
PMT
$839M
| $467K | ﹤0.01% |
266
+146
| +122% | +$2.47K |
|
3514
PUT
Red Robin
RRGB
$136M
| $467K | ﹤0.01% |
243
+127
| +109% | +$2.13K |
|
3515
PUT
Royal Bank of Canada
RY
$291B
| $467K | ﹤0.01% |
57
-287
| -83% | -$22.2K |
|
3516
PUT
Warner Music
WMG
$14.4B
| $467K | ﹤0.01% |
123
+44
| +56% | +$1.34K |
|
3517
Omega Healthcare
OHI
$15.3B
| $466K | ﹤0.01% |
12,838
-1,747
| -12% | -$59.2K |
|
3518
PUT
SelectQuote
SLQT
$128M
| $466K | ﹤0.01% |
225
+77
| +52% | +$1.58K |
|
3519
Alarm.com
ALRM
$2.65B
| $465K | ﹤0.01% |
4,495
-4,590
| -51% | -$333K |
|
3520
Cencora
COR
$60.5B
| $465K | ﹤0.01% |
4,766
-4,261
| -47% | -$426K |
|
3521
PUT
MicroSectors FANG+ ETNs due Jan 8 2038
FNGS
$545M
| $465K | ﹤0.01% |
+168
| New | +$4.22K |
|
|
MNTV
3522
CALL
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $465K | ﹤0.01% |
182
-148
| -45% | -$3.33K |
|
3523
CALL
Ingredion
INGR
$6.4B
| $464K | ﹤0.01% |
59
+32
| +119% | +$2.47K |
|
3524
PUT
Lightspeed Commerce
LSPD
$1.35B
| $464K | ﹤0.01% |
+66
| New | +$3.05K |
|
|
LAC
3525
CALL
DELISTED
Lithium Americas Corp. Common Shares
LAC
| $464K | ﹤0.01% |
370
+31
| +9% | +$348 |
|
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.