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 | |
|---|---|---|---|---|---|---|
1251
Scotiabank
BNS
$106B
| $188K | 0.01% |
3,210
-2,754
| -46% | -$164K |
|
1252
Darden Restaurants
DRI
$22.4B
| $188K | 0.01% |
2,247
+2,047
| +1,024% | +$153K |
|
1253
Ormat Technologies
ORA
$6.16B
| $188K | 0.01% |
+3,307
| New | +$183K |
|
1254
CALL
Tapestry
TPR
$28.6B
| $188K | 0.01% |
900
+523
| +139% | +$19.7K |
|
|
VALE.P
1255
CALL
DELISTED
Vale S A
VALE.P
| $188K | 0.01% |
1,657
-1,302
| -44% | -$12.2K |
|
1256
Semtech
SMTC
$11.9B
| $187K | 0.01% |
5,533
+3,799
| +219% | +$128K |
|
|
KTWO
1257
DELISTED
K2M Group Holdings, Inc
KTWO
| $187K | 0.01% |
+9,135
| New | +$188K |
|
|
FNGN
1258
CALL
DELISTED
Financial Engines, Inc.
FNGN
| $187K | 0.01% |
321
+311
| +3,110% | +$12.4K |
|
1259
BGC Group
BGC
$5.57B
| $186K | 0.01% |
25,502
+21,793
| +588% | +$157K |
|
|
HBI
1260
PUT
DELISTED
Hanesbrands
HBI
| $186K | 0.01% |
1,868
+1,723
| +1,188% | +$36.5K |
|
|
ORBK
1261
DELISTED
Orbotech Ltd
ORBK
| $186K | 0.01% |
5,782
+5,689
| +6,117% | +$184K |
|
1262
CALL
Cadence Design Systems
CDNS
$91.7B
| $185K | 0.01% |
+542
| New | +$15.8K |
|
|
TTM.RT
1263
PUT
DELISTED
TATA MOTORS LIMITED RT PUR ADR
TTM.RT
| $185K | 0.01% |
518
+279
| +117% | +$99.6K |
|
1264
Etsy
ETSY
$7.68B
| $184K | 0.01% |
17,310
+3,794
| +28% | +$44.5K |
|
|
INFN
1265
DELISTED
Infinera Corporation Common Stock
INFN
| $184K | 0.01% |
+18,008
| New | +$181K |
|
|
CLVS
1266
PUT
DELISTED
Clovis Oncology, Inc.
CLVS
| $184K | 0.01% |
688
+55
| +9% | +$3.34K |
|
|
AKRX
1267
DELISTED
Akorn Inc
AKRX
| $184K | 0.01% |
7,646
+6,693
| +702% | +$146K |
|
1268
PUT
Assured Guaranty
AGO
$3.8B
| $183K | 0.01% |
1,860
+1,183
| +175% | +$46.9K |
|
1269
CALL
lululemon athletica
LULU
$13B
| $183K | 0.01% |
3,850
+2,582
| +204% | +$170K |
|
1270
ProShares Ultra Financials
UYG
$804M
| $183K | 0.01% |
5,661
+4,665
| +468% | +$152K |
|
1271
ProShares UltraShort Yen
YCS
$34.5M
| $183K | 0.01% |
10,128
+8,856
| +696% | +$167K |
|
|
CTXS
1272
CALL
DELISTED
Citrix Systems Inc
CTXS
| $183K | 0.01% |
467
+390
| +506% | +$30.4K |
|
|
SINA
1273
PUT
DELISTED
Sina Corp
SINA
| $183K | 0.01% |
530
-86
| -14% | -$6.09K |
|
|
LN
1274
PUT
DELISTED
LINE Corporation
LN
| $183K | 0.01% |
463
+251
| +118% | +$8.64K |
|
|
DATA
1275
CALL
DELISTED
Tableau Software, Inc.
DATA
| $183K | 0.01% |
418
+167
| +67% | +$8.26K |
|
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.