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 | |
|---|---|---|---|---|---|---|
376
Restaurant Brands International
QSR
$25.4B
| $715K | 0.04% |
15,008
-7,657
| -34% | -$353K |
|
377
Targa Resources
TRGP
$61.1B
| $714K | 0.04% |
+12,741
| New | +$644K |
|
378
CALL
SPDR Gold Trust
GLD
$133B
| $712K | 0.04% |
7,417
-4,041
| -35% | -$469K |
|
379
PUT
Las Vegas Sands
LVS
$30B
| $712K | 0.04% |
2,738
+809
| +42% | +$47.1K |
|
380
CALL
Energy Transfer Partners
ET
$70.1B
| $707K | 0.04% |
2,482
-349
| -12% | -$5.82K |
|
381
CALL
Texas Instruments
TXN
$268B
| $704K | 0.04% |
2,083
+691
| +50% | +$49.3K |
|
|
GAP
382
The Gap Inc
GAP
$7.07B
| $703K | 0.04% |
31,328
+1,929
| +7% | +$49.7K |
|
383
PUT
Devon Energy
DVN
$51.8B
| $702K | 0.04% |
2,233
-495
| -18% | -$21.9K |
|
|
VASC
384
DELISTED
Vascular Solutions Inc
VASC
| $702K | 0.04% |
12,526
+12,353
| +7,140% | +$629K |
|
385
Encompass Health
EHC
$11B
| $701K | 0.04% |
21,368
+18,588
| +669% | +$603K |
|
|
LN
386
DELISTED
LINE Corporation
LN
| $700K | 0.04% |
+20,594
| New | +$818K |
|
387
Reliance Steel & Aluminium
RS
$19.7B
| $699K | 0.04% |
+8,799
| New | +$670K |
|
388
PUT
Johnson & Johnson
JNJ
$615B
| $698K | 0.04% |
3,501
-1,316
| -27% | -$152K |
|
|
ACIA
389
PUT
DELISTED
Acacia Communications Inc
ACIA
| $695K | 0.04% |
466
+460
| +7,667% | +$35.1K |
|
|
STJ
390
DELISTED
St Jude Medical
STJ
| $694K | 0.04% |
+8,662
| New | +$688K |
|
391
PUT
Walt Disney
DIS
$166B
| $693K | 0.04% |
3,422
-1,086
| -24% | -$106K |
|
392
PUT
FedEx
FDX
$76.6B
| $693K | 0.04% |
2,971
+702
| +31% | +$129K |
|
|
SRCL
393
DELISTED
Stericycle Inc
SRCL
| $693K | 0.04% |
9,007
+7,178
| +392% | +$542K |
|
394
CALL
Kraft Heinz
KHC
$30.8B
| $692K | 0.04% |
1,193
-270
| -18% | -$23.1K |
|
|
395
PUT
Wells Fargo
WFC
$262B
| $690K | 0.04% |
8,143
+908
| +13% | +$45.7K |
|
396
Equifax
EFX
$20.3B
| $687K | 0.04% |
5,811
+5,452
| +1,519% | +$666K |
|
|
SPA
397
DELISTED
Sparton
SPA
| $685K | 0.04% |
+28,751
| New | +$696K |
|
|
GG.WS.A
398
PUT
DELISTED
GOLDCORP INC SERIES A WARRANTS EXP 5/30/2007
GG.WS.A
| $682K | 0.04% |
1,241
-2,019
| -62% | -$1.11M |
|
|
AVG
399
DELISTED
AVG Technologies N.V.
AVG
| $678K | 0.04% |
26,800
-12,583
| -32% | -$316K |
|
400
PUT
Deutsche Bank
DB
$68.1B
| $674K | 0.04% |
7,955
+3,917
| +97% | +$55.2K |
|
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.