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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ARCH
3326
PUT
DELISTED
Arch Resources, Inc.
ARCH
| $19K | ﹤0.01% |
120
-113
| -48% | -$8.02K |
|
|
LGCY
3327
PUT
DELISTED
Legacy Reserves Inc. Common Stock
LGCY
| $19K | ﹤0.01% |
323
+294
| +1,014% | +$663 |
|
|
WLB
3328
CALL
DELISTED
Westmoreland Coal Company
WLB
| $19K | ﹤0.01% |
171
-27
| -14% | -$430 |
|
|
BBG
3329
CALL
DELISTED
Bill Barrett Corp
BBG
| $19K | ﹤0.01% |
411
+336
| +448% | +$1.96K |
|
|
TROVW
3330
PUT
DELISTED
TrovaGene, Inc. Warrant
TROVW
| $19K | ﹤0.01% |
138
+110
| +393% | +$28 |
|
|
BOBE
3331
CALL
DELISTED
Bob Evans Farms, Inc.
BOBE
| $19K | ﹤0.01% |
46
+44
| +2,200% | +$2.48K |
|
3332
CALL
Acco Brands
ACCO
$381M
| $18K | ﹤0.01% |
152
+79
| +108% | +$1.03K |
|
3333
PUT
Align Technology
ALGN
$12B
| $18K | ﹤0.01% |
380
+308
| +428% | +$31.1K |
|
3334
PUT
Aon
AON
$78.4B
| $18K | ﹤0.01% |
330
-62
| -16% | -$7.15K |
|
3335
PUT
Franklin Resources
BEN
$17.3B
| $18K | ﹤0.01% |
549
-144
| -21% | -$5.97K |
|
3336
PUT
Broadridge
BR
$17.7B
| $18K | ﹤0.01% |
364
+71
| +24% | +$4.81K |
|
3337
CDW
CDW
$17.6B
| $18K | ﹤0.01% |
317
+257
| +428% | +$14.5K |
|
3338
PUT
Cimpress
CMPR
$2.41B
| $18K | ﹤0.01% |
62
-4
| -6% | -$346 |
|
3339
Consumer Portfolio Services
CPSS
$201M
| $18K | ﹤0.01% |
+3,949
| New | +$19.7K |
|
3340
Consolidated Water Co
CWCO
$472M
| $18K | ﹤0.01% |
1,580
+1,319
| +505% | +$13.9K |
|
3341
CALL
Energy Recovery
ERII
$439M
| $18K | ﹤0.01% |
487
+434
| +819% | +$4.03K |
|
3342
PUT
Exelon
EXC
$48.2B
| $18K | ﹤0.01% |
313
+198
| +172% | +$5.05K |
|
|
KYNB
3343
CALL
Kyntra Bio
KYNB
$28.5M
| $18K | ﹤0.01% |
4
+3
| +300% | +$1.83K |
|
3344
CALL
Flex
FLEX
$42.5B
| $18K | ﹤0.01% |
200
+126
| +170% | +$1.51K |
|
3345
PUT
Corning
GLW
$123B
| $18K | ﹤0.01% |
351
-290
| -45% | -$7.72K |
|
3346
CALL
HCI Group
HCI
$2.25B
| $18K | ﹤0.01% |
78
+37
| +90% | +$1.63K |
|
3347
CALL
Intercontinental Exchange
ICE
$84.1B
| $18K | ﹤0.01% |
93
-48
| -34% | -$2.81K |
|
3348
iShares Latin America 40 ETF
ILF
$3.79B
| $18K | ﹤0.01% |
+572
| New | +$17.6K |
|
3349
CALL
Invesco
IVZ
$13.3B
| $18K | ﹤0.01% |
549
+122
| +29% | +$3.81K |
|
3350
PUT
Labcorp
LH
$24.7B
| $18K | ﹤0.01% |
144
+109
| +311% | +$12.9K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.