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 | |
|---|---|---|---|---|---|---|
|
HOUS
2451
PUT
DELISTED
Anywhere Real Estate
HOUS
| $827K | ﹤0.01% |
877
-2
| -0.2% | -$19 |
|
2452
PUT
Meritage Homes
MTH
$4.87B
| $827K | ﹤0.01% |
150
+128
| +582% | +$6.13K |
|
2453
ProShares Trust UltraShort Lehman 7-10 Year Treasury
PST
$10.6M
| $826K | ﹤0.01% |
54,598
-11,900
| -18% | -$180K |
|
2454
CALL
Globant
GLOB
$1.35B
| $824K | ﹤0.01% |
46
-20
| -30% | -$3.44K |
|
2455
PUT
Xylem
XYL
$28.5B
| $824K | ﹤0.01% |
98
+69
| +238% | +$5.37K |
|
2456
CALL
Molina Healthcare
MOH
$10.3B
| $823K | ﹤0.01% |
45
-1
| -2% | -$182 |
|
2457
PUT
MarineMax
HZO
$800M
| $821K | ﹤0.01% |
320
-449
| -58% | -$12.3K |
|
2458
CALL
Progyny
PGNY
$2.44B
| $821K | ﹤0.01% |
279
+170
| +156% | +$4.69K |
|
2459
Union Pacific
UNP
$183B
| $821K | ﹤0.01% |
+4,172
| New | +$775K |
|
2460
CALL
W.W. Grainger
GWW
$65.3B
| $820K | ﹤0.01% |
23
+1
| +5% | +$345 |
|
2461
PUT
Inseego
INSG
$108M
| $820K | ﹤0.01% |
80
+6
| +8% | +$693 |
|
|
FTCH
2462
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $820K | ﹤0.01% |
32,620
-6,678
| -17% | -$166K |
|
2463
CALL
Flex
FLEX
$43.4B
| $818K | ﹤0.01% |
975
-8
| -0.8% | -$65 |
|
2464
CALL
Grocery Outlet
GO
$891M
| $817K | ﹤0.01% |
208
+148
| +247% | +$6.1K |
|
2465
PUT
ADT
ADT
$5.16B
| $816K | ﹤0.01% |
999
+712
| +248% | +$6.93K |
|
2466
PUT
Ionis Pharmaceuticals
IONS
$9.35B
| $816K | ﹤0.01% |
172
-100
| -37% | -$5.55K |
|
2467
PUT
Expeditors International
EXPD
$22.9B
| $814K | ﹤0.01% |
90
-186
| -67% | -$15.8K |
|
2468
CALL
Mercury Insurance
MCY
$5.94B
| $814K | ﹤0.01% |
197
+142
| +258% | +$6.1K |
|
2469
CALL
State Street SPDR Portfolio Europe ETF
SPEU
$712M
| $812K | ﹤0.01% |
219
-724
| -77% | -$24.1K |
|
|
KRA
2470
CALL
DELISTED
Kraton Corporation
KRA
| $812K | ﹤0.01% |
456
+328
| +256% | +$5.29K |
|
2471
MetLife
MET
$61B
| $811K | ﹤0.01% |
21,835
+1,808
| +9% | +$68.6K |
|
2472
PUT
Encore Capital Group
ECPG
$1.93B
| $810K | ﹤0.01% |
210
+186
| +775% | +$7.42K |
|
2473
CALL
Upbound Group
UPBD
$1.19B
| $810K | ﹤0.01% |
271
+89
| +49% | +$2.63K |
|
2474
CALL
Aurinia Pharmaceuticals
AUPH
$1.97B
| $808K | ﹤0.01% |
549
+291
| +113% | +$4.22K |
|
2475
PUT
Fluor
FLR
$7.29B
| $808K | ﹤0.01% |
918
+239
| +35% | +$2.51K |
|
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.