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 |
Gilead Sciences
GILD
|
+$17.3M |
| 2 |
Apple
AAPL
|
+$15.2M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$14.9M |
| 4 |
Booking.com
BKNG
|
+$14.7M |
| 5 |
Wells Fargo
WFC
|
+$12.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$38.3M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
+$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
+$12.6M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.39% |
| 2 | Healthcare | 8.28% |
| 3 | Consumer Discretionary | 6.84% |
| 4 | Technology | 6.06% |
| 5 | Financials | 4.39% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
401
CALL
Seagate
STX
$205B
| $645K | 0.04% |
2,181
+1,282
| +143% | +$41.6K |
|
402
Viatris
VTRS
$19.8B
| $645K | 0.04% |
+16,922
| New | +$752K |
|
|
CPN
403
DELISTED
Calpine Corporation
CPN
| $638K | 0.04% |
+50,547
| New | +$681K |
|
404
PUT
Halliburton
HAL
$27.6B
| $637K | 0.04% |
2,232
-453
| -17% | -$19.8K |
|
405
Public Storage
PSA
$54.7B
| $637K | 0.04% |
+2,855
| New | +$667K |
|
406
CALL
Walt Disney
DIS
$166B
| $636K | 0.04% |
3,986
-1,088
| -21% | -$104K |
|
407
PUT
Simon Property Group
SPG
$73.4B
| $636K | 0.04% |
683
+393
| +136% | +$85.2K |
|
408
Teleflex
TFX
$5.97B
| $635K | 0.04% |
3,780
+325
| +9% | +$58.2K |
|
409
CALL
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27B
| $634K | 0.04% |
561
-368
| -40% | -$104K |
|
410
Teradyne
TER
$57.8B
| $634K | 0.04% |
+29,418
| New | +$607K |
|
|
CLR
411
CALL
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $634K | 0.04% |
888
+221
| +33% | +$10.3K |
|
|
JOY
412
DELISTED
Joy Global Inc
JOY
| $633K | 0.04% |
+22,848
| New | +$606K |
|
413
CALL
Yelp
YELP
$1.36B
| $632K | 0.04% |
1,205
+647
| +116% | +$22.7K |
|
414
CALL
Bank of America
BAC
$432B
| $630K | 0.04% |
6,505
-7,235
| -53% | -$108K |
|
415
CALL
Skyworks Solutions
SWKS
$9.5B
| $630K | 0.04% |
1,589
+603
| +61% | +$42K |
|
416
Norwegian Cruise Line
NCLH
$8.87B
| $629K | 0.04% |
16,708
+13,631
| +443% | +$529K |
|
|
SWIR
417
DELISTED
Sierra Wireless
SWIR
| $629K | 0.04% |
43,718
+7,203
| +20% | +$111K |
|
|
WEB
418
DELISTED
Web.com Group, Inc.
WEB
| $629K | 0.04% |
36,431
+28,455
| +357% | +$510K |
|
419
Cummins
CMI
$91.2B
| $628K | 0.04% |
4,901
-11,071
| -69% | -$1.34M |
|
|
GG.WS.A
420
PUT
DELISTED
GOLDCORP INC SERIES A WARRANTS EXP 5/30/2007
GG.WS.A
| $627K | 0.04% |
3,260
-359
| -10% | -$69K |
|
421
Franklin Covey
FC
$241M
| $626K | 0.04% |
35,176
+33,057
| +1,560% | +$533K |
|
422
Lockheed Martin
LMT
$119B
| $626K | 0.04% |
2,612
-29,348
| -92% | -$7.34M |
|
423
CALL
Procter & Gamble
PG
$347B
| $626K | 0.04% |
6,797
+3,091
| +83% | +$268K |
|
424
ProShares VIX Short-Term Futures ETF
VIXY
$204M
| $626K | 0.04% |
69
+43
| +165% | +$457K |
|
425
CALL
Bausch Health
BHC
$1.7B
| $625K | 0.04% |
8,586
+64
| +0.8% | +$1.66K |
|
Similar funds
Simplex Trading's Q3 2016 Portfolio in Review
As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.
By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.
- Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
- Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
- Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
- Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
- Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
- Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
- Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.
Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.