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
|
+$45.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$30.1M |
| 3 |
TWX
Time Warner Inc
TWX
|
+$25.8M |
| 4 |
Booking.com
BKNG
|
+$22.5M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$17.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$43.6M |
| 2 |
Amgen
AMGN
|
+$33.2M |
| 3 |
Baidu
BIDU
|
+$19.3M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$17.3M |
| 5 |
Micron Technology
MU
|
+$17.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 14.31% |
| 2 | Technology | 13.17% |
| 3 | Communication Services | 11.81% |
| 4 | Healthcare | 4.06% |
| 5 | Financials | 3.84% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
SPLK
376
DELISTED
Splunk Inc
SPLK
| $1M | 0.04% |
+15,086
| New | +$944K |
|
377
Copa Holdings
CPA
$5.66B
| $1M | 0.04% |
+8,032
| New | +$1.02M |
|
378
Carnival Corporation Ltd
CCL
$35.7B
| $996K | 0.04% |
15,429
+15,144
| +5,314% | +$1.01M |
|
379
YPF
YPF
$20.6B
| $992K | 0.04% |
44,548
-114,555
| -72% | -$2.36M |
|
380
PUT
Kraft Heinz
KHC
$30.8B
| $976K | 0.04% |
1,365
-1,269
| -48% | -$106K |
|
|
COHR
381
DELISTED
Coherent Inc
COHR
| $976K | 0.04% |
4,152
+452
| +12% | +$109K |
|
382
PUT
Dick's Sporting Goods
DKS
$18.8B
| $975K | 0.04% |
657
-139
| -17% | -$4.42K |
|
|
FINL
383
DELISTED
Finish Line
FINL
| $972K | 0.04% |
80,876
+38,866
| +93% | +$464K |
|
384
National Healthcare
NHC
$3.44B
| $971K | 0.04% |
+15,528
| New | +$1M |
|
|
VMW
385
CALL
DELISTED
VMware, Inc
VMW
| $971K | 0.04% |
1,439
+788
| +121% | +$77.8K |
|
386
CALL
Universal Display
OLED
$3.81B
| $969K | 0.04% |
522
+274
| +110% | +$33.1K |
|
|
TSRO
387
DELISTED
TESARO, Inc.
TSRO
| $968K | 0.04% |
7,499
-3,539
| -32% | -$439K |
|
388
CALL
Autodesk
ADSK
$43B
| $967K | 0.04% |
662
-460
| -41% | -$50.7K |
|
|
BLUE
389
DELISTED
bluebird bio
BLUE
| $967K | 0.04% |
544
-305
| -36% | -$426K |
|
390
Evolent Health
EVH
$627M
| $967K | 0.04% |
54,361
+14,987
| +38% | +$309K |
|
|
RGC
391
DELISTED
Regal Entertainment Group
RGC
| $967K | 0.04% |
60,491
+56,759
| +1,521% | +$978K |
|
392
Teradata
TDC
$2.64B
| $966K | 0.04% |
+28,594
| New | +$888K |
|
393
CALL
Lockheed Martin
LMT
$119B
| $963K | 0.04% |
778
-28
| -3% | -$8.35K |
|
394
HSBC
HSBC
$354B
| $961K | 0.04% |
21,289
-48,963
| -70% | -$2.17M |
|
395
Jack in the Box
JACK
$272M
| $961K | 0.04% |
9,433
+3,096
| +49% | +$296K |
|
396
CALL
American Express
AXP
$238B
| $959K | 0.04% |
1,741
+289
| +20% | +$24.8K |
|
397
PUT
Goldman Sachs
GS
$324B
| $958K | 0.04% |
3,864
-1,853
| -32% | -$418K |
|
|
STI
398
DELISTED
SunTrust Banks, Inc.
STI
| $958K | 0.04% |
+16,030
| New | +$906K |
|
399
PUT
CVS Health
CVS
$138B
| $957K | 0.04% |
2,226
-466
| -17% | -$36.9K |
|
400
CALL
XPO
XPO
$25.1B
| $944K | 0.04% |
3,351
+1,642
| +96% | +$34.4K |
|
Similar funds
Simplex Trading's Q3 2017 Portfolio in Review
As of Q3 2017, Simplex Trading held 7,357 positions worth $2.45B, up 6.4% from $2.3B the previous quarter. Its ten largest holdings account for 24% of the portfolio.
Simplex Trading's Q3 2017 filing shows 1,313 new, 2,078 increased, 2,339 reduced and 1,500 closed positions. Its largest new stake was iShares Russell 2000 ETF: 214,170 shares worth $31.7M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $43.6M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 14% of assets, up from 9.7% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q3 2017 buy was iShares Russell 2000 ETF: 214,170 shares worth $31.7M.
- Simplex Trading added most to Amazon in Q3 2017, an estimated $45.9M increase.
- Simplex Trading's biggest Q3 2017 reduction was Baidu, cutting an estimated $19.3M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q3 2017, selling an estimated $43.6M.
- Simplex Trading's ten largest holdings make up 24% of its $2.45B portfolio in Q3 2017.
- Simplex Trading opened 1,313 new positions and closed 1,500 in Q3 2017.
- Simplex Trading's portfolio value rose 6.4% quarter-over-quarter to $2.45B.
Based on Simplex Trading's 13F filing for Q3 2017, filed 25 Oct 2017.