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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2551
CALL
Kinross Gold
KGC
$28.5B
| $760K | ﹤0.01% |
862
-3,817
| -82% | -$33K |
|
2552
PUT
Navient
NAVI
$774M
| $759K | ﹤0.01% |
899
-623
| -41% | -$5.11K |
|
2553
CALL
Vulcan Materials
VMC
$36.3B
| $759K | ﹤0.01% |
56
-94
| -63% | -$11.8K |
|
2554
Direxion Daily S&P 500 Bull 3x ETF
SPXL
$6.58B
| $758K | ﹤0.01% |
14,405
+4,105
| +40% | +$211K |
|
2555
CALL
Calix
CALX
$2.27B
| $757K | ﹤0.01% |
426
+385
| +939% | +$7.27K |
|
2556
PUT
Signet Jewelers
SIG
$3.55B
| $757K | ﹤0.01% |
405
-38
| -9% | -$553 |
|
2557
PUT
Tanger
SKT
$4.82B
| $757K | ﹤0.01% |
1,257
-1,410
| -53% | -$8.84K |
|
2558
CALL
Zurn Elkay Water Solutions
ZWS
$8.07B
| $757K | ﹤0.01% |
527
+481
| +1,046% | +$6.87K |
|
|
MIK
2559
CALL
DELISTED
Michaels Stores, Inc
MIK
| $757K | ﹤0.01% |
785
+95
| +14% | +$825 |
|
2560
Wolfspeed
WOLF
$1.2B
| $756K | ﹤0.01% |
11,871
+9,578
| +418% | +$620K |
|
|
MDLA
2561
CALL
DELISTED
Medallia, Inc.
MDLA
| $756K | ﹤0.01% |
276
+204
| +283% | +$6.19K |
|
|
BFX
2562
PUT
DELISTED
BowFlex Inc.
BFX
| $755K | ﹤0.01% |
440
+253
| +135% | +$3.24K |
|
2563
CALL
Helen of Troy
HELE
$663M
| $754K | ﹤0.01% |
39
+37
| +1,850% | +$7.35K |
|
|
GLUU
2564
CALL
DELISTED
Glu Mobile Inc.
GLUU
| $754K | ﹤0.01% |
983
-259
| -21% | -$2.17K |
|
2565
PUT
CoreCivic
CXW
$3.1B
| $753K | ﹤0.01% |
942
+177
| +23% | +$1.61K |
|
2566
CALL
Mattel
MAT
$4.17B
| $753K | ﹤0.01% |
644
+44
| +7% | +$489 |
|
2567
PUT
CGI
GIB
$13.9B
| $752K | ﹤0.01% |
111
-109
| -50% | -$7.42K |
|
2568
Groupon
GRPN
$980M
| $751K | ﹤0.01% |
36,831
+31,752
| +625% | +$740K |
|
2569
CALL
Jacobs Solutions
J
$15.9B
| $751K | ﹤0.01% |
98
+67
| +216% | +$4.9K |
|
|
AGNT
2570
CALL
AGNT Inc
AGNT
$664M
| $750K | ﹤0.01% |
+372
| New | +$5.74K |
|
2571
PUT
Pembina Pipeline
PBA
$29.9B
| $749K | ﹤0.01% |
353
-101
| -22% | -$2.48K |
|
2572
CALL
Vericel Corp
VCEL
$2.3B
| $748K | ﹤0.01% |
404
+376
| +1,343% | +$6.22K |
|
2573
PUT
United States 12 Month Oil Fund,
USL
$46.6M
| $746K | ﹤0.01% |
496
-184
| -27% | -$2.85K |
|
|
CMO
2574
PUT
DELISTED
Capstead Mortgage Corp.
CMO
| $746K | ﹤0.01% |
1,328
+1,273
| +2,315% | +$7.6K |
|
2575
PUT
Fortuna Silver Mines
FSM
$2.59B
| $744K | ﹤0.01% |
1,171
+192
| +20% | +$1.23K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,403 new, 3,135 increased, 3,122 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,403 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.