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 | |
|---|---|---|---|---|---|---|
651
Fomento Económico Mexicano
FMX
$44.6B
| $378K | 0.03% |
+4,114
| New | +$379K |
|
652
CALL
Abbott
ABT
$175B
| $376K | 0.03% |
2,577
+933
| +57% | +$40K |
|
653
PUT
Williams Companies
WMB
$91.1B
| $376K | 0.03% |
1,283
+590
| +85% | +$15.7K |
|
|
FGL
654
DELISTED
Fidelity & Guaranty Life
FGL
| $376K | 0.03% |
16,230
+4,827
| +42% | +$111K |
|
655
Galicia Financial Group
GGAL
$8.55B
| $375K | 0.03% |
+12,074
| New | +$363K |
|
|
DD
656
DELISTED
Du Pont De Nemours E I
DD
| $375K | 0.03% |
5,603
+3,103
| +124% | +$211K |
|
657
Tronox
TROX
$1.06B
| $374K | 0.03% |
39,976
-16,070
| -29% | -$124K |
|
|
RDS.A
658
PUT
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $374K | 0.03% |
1,501
-553
| -27% | -$28.2K |
|
659
Cencora
COR
$58.5B
| $373K | 0.03% |
4,619
+634
| +16% | +$54.3K |
|
|
DST
660
DELISTED
DST Systems Inc.
DST
| $373K | 0.03% |
6,338
-10,472
| -62% | -$634K |
|
661
VanEck Agribusiness ETF
MOO
$990M
| $372K | 0.03% |
+7,447
| New | +$369K |
|
|
LL
662
DELISTED
LL Flooring Holdings, Inc.
LL
| $372K | 0.03% |
+18,945
| New | +$311K |
|
663
Eldorado Gold
EGO
$8.36B
| $371K | 0.03% |
18,919
+14,567
| +335% | +$301K |
|
|
SLCA
664
CALL
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $368K | 0.02% |
457
-968
| -68% | -$37.7K |
|
|
TTM.RT
665
CALL
DELISTED
TATA MOTORS LIMITED RT PUR ADR
TTM.RT
| $368K | 0.02% |
539
-187
| -26% | -$128K |
|
|
WFM
666
PUT
DELISTED
Whole Foods Market Inc
WFM
| $367K | 0.02% |
643
-456
| -41% | -$14K |
|
667
CALL
Petrobras
PBR
$122B
| $366K | 0.02% |
2,641
-52
| -2% | -$456 |
|
|
ESRX
668
CALL
DELISTED
Express Scripts Holding Company
ESRX
| $366K | 0.02% |
1,767
+102
| +6% | +$7.63K |
|
|
SVU
669
DELISTED
SUPERVALU Inc.
SVU
| $365K | 0.02% |
10,473
+5,084
| +94% | +$180K |
|
|
HOLX
670
DELISTED
Hologic
HOLX
| $363K | 0.02% |
9,365
-3,125
| -25% | -$118K |
|
671
iShares Russell 1000 Growth ETF
IWF
$125B
| $363K | 0.02% |
13,960
+13,208
| +1,756% | +$343K |
|
672
American Electric Power
AEP
$72.4B
| $362K | 0.02% |
5,644
-320
| -5% | -$21.5K |
|
673
CALL
RTX Corp
RTX
$262B
| $362K | 0.02% |
2,036
-203
| -9% | -$13.5K |
|
674
Precigen
PGEN
$1.9B
| $361K | 0.02% |
+13,020
| New | +$344K |
|
|
MBLY
675
PUT
DELISTED
Mobileye N.V.
MBLY
| $361K | 0.02% |
1,254
+684
| +120% | +$31.6K |
|
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.