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 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$49.8M |
| 2 |
Apple
AAPL
|
+$24.5M |
| 3 |
Citigroup
C
|
+$23.5M |
| 4 |
Amazon
AMZN
|
+$22.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$17.4M |
| 2 |
Wells Fargo
WFC
|
+$13.5M |
| 3 |
MDVN
MEDIVATION, INC.
MDVN
|
+$8.62M |
| 4 |
Goldman Sachs
GS
|
+$8.5M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$8.15M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.76% |
| 2 | Technology | 7.19% |
| 3 | Healthcare | 6.91% |
| 4 | Consumer Discretionary | 6.53% |
| 5 | Financials | 5.37% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1351
CALL
Olin
OLN
$2.64B
| $126K | 0.01% |
524
+220
| +72% | +$5.22K |
|
|
RTEC
1352
DELISTED
Rudolph Technologies Inc
RTEC
| $126K | 0.01% |
+5,402
| New | +$106K |
|
|
BID
1353
CALL
DELISTED
Sotheby's
BID
| $126K | 0.01% |
327
+118
| +56% | +$4.47K |
|
|
ETP
1354
PUT
DELISTED
Energy Transfer Partners, L.P.
ETP
| $126K | 0.01% |
788
+443
| +128% | +$11.2K |
|
|
BLUE
1355
CALL
DELISTED
bluebird bio
BLUE
| $125K | 0.01% |
17
-15
| -47% | -$11.9K |
|
1356
New Oriental
EDU
$7.84B
| $125K | 0.01% |
2,980
+179
| +6% | +$8.43K |
|
1357
Howard Hughes
HHH
$3.93B
| $125K | 0.01% |
+1,158
| New | +$123K |
|
|
HOLX
1358
DELISTED
Hologic
HOLX
| $125K | 0.01% |
3,136
-6,229
| -67% | -$240K |
|
1359
CALL
HSBC
HSBC
$355B
| $125K | 0.01% |
452
-779
| -63% | -$27.6K |
|
1360
PUT
Kimberly-Clark
KMB
$36.4B
| $125K | 0.01% |
281
-55
| -16% | -$6.38K |
|
1361
PUT
Mastercard
MA
$477B
| $125K | 0.01% |
1,485
-20
| -1% | -$2.07K |
|
1362
CALL
Veeva Systems
VEEV
$30.3B
| $125K | 0.01% |
1,214
+407
| +50% | +$16.6K |
|
|
INVX
1363
Innovex International
INVX
$1.87B
| $125K | 0.01% |
2,083
+906
| +77% | +$50.4K |
|
|
CLVS
1364
PUT
DELISTED
Clovis Oncology, Inc.
CLVS
| $125K | 0.01% |
633
+309
| +95% | +$10.9K |
|
1365
PUT
Avis
CAR
$5.63B
| $124K | 0.01% |
508
+124
| +32% | +$4.49K |
|
1366
CALL
Helmerich & Payne
HP
$3.53B
| $124K | 0.01% |
200
-78
| -28% | -$5.54K |
|
1367
PUT
Monster Beverage
MNST
$91.4B
| $124K | 0.01% |
1,826
-22
| -1% | -$504 |
|
|
TGNA
1368
DELISTED
TEGNA Inc
TGNA
| $124K | 0.01% |
9,061
+7,548
| +499% | +$103K |
|
1369
AeroVironment
AVAV
$7.57B
| $123K | 0.01% |
4,611
+1,882
| +69% | +$48.8K |
|
|
SAGE
1370
CALL
DELISTED
Sage Therapeutics
SAGE
| $123K | 0.01% |
144
-50
| -26% | -$2.36K |
|
|
VGR
1371
DELISTED
Vector Group Ltd.
VGR
| $123K | 0.01% |
+8,873
| New | +$115K |
|
|
ISEE
1372
DELISTED
IVERIC bio, Inc. Common Stock
ISEE
| $123K | 0.01% |
25,663
+18,265
| +247% | +$542K |
|
|
DATA
1373
CALL
DELISTED
Tableau Software, Inc.
DATA
| $123K | 0.01% |
251
+68
| +37% | +$3.17K |
|
|
EGAS
1374
PUT
DELISTED
Gas Natural Inc.
EGAS
| $123K | 0.01% |
+510
| New | +$6.18K |
|
|
CA
1375
CALL
DELISTED
CA, Inc.
CA
| $123K | 0.01% |
2,094
-28
| -1% | -$894 |
|
Similar funds
Simplex Trading's Q4 2016 Portfolio in Review
As of Q4 2016, Simplex Trading held 7,301 positions worth $1.67B, up 13% from $1.48B the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $181M of net new capital in Q4 2016, opening 1,543 new positions and adding to 2,137 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
By sector, the portfolio is most concentrated in Communication Services at 8.8% of assets, up from 8.4% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Goldman Sachs, an estimated $8.5M trimmed.
- Simplex Trading's largest Q4 2016 buy was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
- Simplex Trading added most to Apple in Q4 2016, an estimated $24.5M increase.
- Simplex Trading's biggest Q4 2016 reduction was Goldman Sachs, cutting an estimated $8.5M.
- Simplex Trading fully exited LinkedIn Corporation in Q4 2016, selling an estimated $17.4M.
- Simplex Trading's ten largest holdings make up 20% of its $1.67B portfolio in Q4 2016.
- Simplex Trading opened 1,543 new positions and closed 1,480 in Q4 2016.
- Simplex Trading's portfolio value rose 13% quarter-over-quarter to $1.67B.
Based on Simplex Trading's 13F filing for Q4 2016, filed 11 Jan 2017.